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Finding the Fourth Proportional to 625,662.81, 938,728.76 and 288,864.81

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Solution

The fourth proportional to 625,662.81, 938,728.76 and 288,864.81 is: 433,405.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,662.81 : 938,728.76 = 288,864.81 : x
  2. Step 2: Convert to fraction form
    625,662.81/938,728.76 = 288,864.81/x
  3. Step 3: Cross multiply
    625,662.81x = 938,728.76 × 288,864.81
  4. Step 4: Simplify right side
    625,662.81x = 271,165,703,454.61
  5. Step 5: Solve for x
    x = 271,165,703,454.61/625,662.81
  6. Step 6: Final answer
    x = 433,405.50

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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.