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Finding the Fourth Proportional to 531,005.92, 732,762.88 and 289,287.36

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Solution

The fourth proportional to 531,005.92, 732,762.88 and 289,287.36 is: 399,202.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,005.92 : 732,762.88 = 289,287.36 : x
  2. Step 2: Convert to fraction form
    531,005.92/732,762.88 = 289,287.36/x
  3. Step 3: Cross multiply
    531,005.92x = 732,762.88 × 289,287.36
  4. Step 4: Simplify right side
    531,005.92x = 211,979,039,061.20
  5. Step 5: Solve for x
    x = 211,979,039,061.20/531,005.92
  6. Step 6: Final answer
    x = 399,202.78

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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.