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Finding the Fourth Proportional to 528,332.85, 729,098.96 and 286,615.41

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Solution

The fourth proportional to 528,332.85, 729,098.96 and 286,615.41 is: 395,529.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,332.85 : 729,098.96 = 286,615.41 : x
  2. Step 2: Convert to fraction form
    528,332.85/729,098.96 = 286,615.41/x
  3. Step 3: Cross multiply
    528,332.85x = 729,098.96 × 286,615.41
  4. Step 4: Simplify right side
    528,332.85x = 208,970,995,917.90
  5. Step 5: Solve for x
    x = 208,970,995,917.90/528,332.85
  6. Step 6: Final answer
    x = 395,529.06

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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.