Home / 985,851.60-1,478,772.60-386,389.20

Finding the Fourth Proportional to 985,851.60, 1,478,772.60 and 386,389.20

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Solution

The fourth proportional to 985,851.60, 1,478,772.60 and 386,389.20 is: 579,581.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,851.60 : 1,478,772.60 = 386,389.20 : x
  2. Step 2: Convert to fraction form
    985,851.60/1,478,772.60 = 386,389.20/x
  3. Step 3: Cross multiply
    985,851.60x = 1,478,772.60 × 386,389.20
  4. Step 4: Simplify right side
    985,851.60x = 571,381,761,895.92
  5. Step 5: Solve for x
    x = 571,381,761,895.92/985,851.60
  6. Step 6: Final answer
    x = 579,581.92

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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.