Home / 1,121,010,739.45-1,547,041,818.47-644,701,480.21

Finding the Fourth Proportional to 1,121,010,739.45, 1,547,041,818.47 and 644,701,480.21

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Solution

The fourth proportional to 1,121,010,739.45, 1,547,041,818.47 and 644,701,480.21 is: 889,715,071.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,010,739.45 : 1,547,041,818.47 = 644,701,480.21 : x
  2. Step 2: Convert to fraction form
    1,121,010,739.45/1,547,041,818.47 = 644,701,480.21/x
  3. Step 3: Cross multiply
    1,121,010,739.45x = 1,547,041,818.47 × 644,701,480.21
  4. Step 4: Simplify right side
    1,121,010,739.45x = 997,380,150,314,379,136
  5. Step 5: Solve for x
    x = 997,380,150,314,379,136/1,121,010,739.45
  6. Step 6: Final answer
    x = 889,715,071.60

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Double scale
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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.