Home / 1,121,010,784.48-1,547,041,880.73-644,701,525.46

Finding the Fourth Proportional to 1,121,010,784.48, 1,547,041,880.73 and 644,701,525.46

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Solution

The fourth proportional to 1,121,010,784.48, 1,547,041,880.73 and 644,701,525.46 is: 889,715,134.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,010,784.48 : 1,547,041,880.73 = 644,701,525.46 : x
  2. Step 2: Convert to fraction form
    1,121,010,784.48/1,547,041,880.73 = 644,701,525.46/x
  3. Step 3: Cross multiply
    1,121,010,784.48x = 1,547,041,880.73 × 644,701,525.46
  4. Step 4: Simplify right side
    1,121,010,784.48x = 997,380,260,454,090,624
  5. Step 5: Solve for x
    x = 997,380,260,454,090,624/1,121,010,784.48
  6. Step 6: Final answer
    x = 889,715,134.11

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Half scale
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Double scale
Find fourth proportional to 1,121,010,785.48, 1,547,041,882.11 and 644,701,526.46
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.