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Finding the Fourth Proportional to 528,901.39, 729,781.27 and 314,108.83

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Solution

The fourth proportional to 528,901.39, 729,781.27 and 314,108.83 is: 433,409.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,901.39 : 729,781.27 = 314,108.83 : x
  2. Step 2: Convert to fraction form
    528,901.39/729,781.27 = 314,108.83/x
  3. Step 3: Cross multiply
    528,901.39x = 729,781.27 × 314,108.83
  4. Step 4: Simplify right side
    528,901.39x = 229,230,740,875.61
  5. Step 5: Solve for x
    x = 229,230,740,875.61/528,901.39
  6. Step 6: Final answer
    x = 433,409.22

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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.