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Finding the Fourth Proportional to 528,892.81, 729,864.61 and 299,444.18

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Solution

The fourth proportional to 528,892.81, 729,864.61 and 299,444.18 is: 413,228.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,892.81 : 729,864.61 = 299,444.18 : x
  2. Step 2: Convert to fraction form
    528,892.81/729,864.61 = 299,444.18/x
  3. Step 3: Cross multiply
    528,892.81x = 729,864.61 × 299,444.18
  4. Step 4: Simplify right side
    528,892.81x = 218,553,705,254.54
  5. Step 5: Solve for x
    x = 218,553,705,254.54/528,892.81
  6. Step 6: Final answer
    x = 413,228.73

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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.