Home / 990,403.08-1,485,034.80-528,210.84

Finding the Fourth Proportional to 990,403.08, 1,485,034.80 and 528,210.84

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Solution

The fourth proportional to 990,403.08, 1,485,034.80 and 528,210.84 is: 792,012.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,403.08 : 1,485,034.80 = 528,210.84 : x
  2. Step 2: Convert to fraction form
    990,403.08/1,485,034.80 = 528,210.84/x
  3. Step 3: Cross multiply
    990,403.08x = 1,485,034.80 × 528,210.84
  4. Step 4: Simplify right side
    990,403.08x = 784,411,479,137.23
  5. Step 5: Solve for x
    x = 784,411,479,137.23/990,403.08
  6. Step 6: Final answer
    x = 792,012.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.