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Finding the Fourth Proportional to 624,873.60, 862,321.28 and 338,387.13

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Solution

The fourth proportional to 624,873.60, 862,321.28 and 338,387.13 is: 466,971.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,873.60 : 862,321.28 = 338,387.13 : x
  2. Step 2: Convert to fraction form
    624,873.60/862,321.28 = 338,387.13/x
  3. Step 3: Cross multiply
    624,873.60x = 862,321.28 × 338,387.13
  4. Step 4: Simplify right side
    624,873.60x = 291,798,421,385.19
  5. Step 5: Solve for x
    x = 291,798,421,385.19/624,873.60
  6. Step 6: Final answer
    x = 466,971.91

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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.