Home / 990,583.38-1,485,035.67-391,966.86

Finding the Fourth Proportional to 990,583.38, 1,485,035.67 and 391,966.86

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Solution

The fourth proportional to 990,583.38, 1,485,035.67 and 391,966.86 is: 587,618.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,583.38 : 1,485,035.67 = 391,966.86 : x
  2. Step 2: Convert to fraction form
    990,583.38/1,485,035.67 = 391,966.86/x
  3. Step 3: Cross multiply
    990,583.38x = 1,485,035.67 × 391,966.86
  4. Step 4: Simplify right side
    990,583.38x = 582,084,768,557.90
  5. Step 5: Solve for x
    x = 582,084,768,557.90/990,583.38
  6. Step 6: Final answer
    x = 587,618.15

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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.