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Finding the Fourth Proportional to 528,895.18, 729,695.10 and 338,018.68

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Solution

The fourth proportional to 528,895.18, 729,695.10 and 338,018.68 is: 466,350.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,895.18 : 729,695.10 = 338,018.68 : x
  2. Step 2: Convert to fraction form
    528,895.18/729,695.10 = 338,018.68/x
  3. Step 3: Cross multiply
    528,895.18x = 729,695.10 × 338,018.68
  4. Step 4: Simplify right side
    528,895.18x = 246,650,573,947.80
  5. Step 5: Solve for x
    x = 246,650,573,947.80/528,895.18
  6. Step 6: Final answer
    x = 466,350.58

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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.