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Finding the Fourth Proportional to 530,551.50, 730,539.63 and 399,918.96

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Solution

The fourth proportional to 530,551.50, 730,539.63 and 399,918.96 is: 550,665.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,551.50 : 730,539.63 = 399,918.96 : x
  2. Step 2: Convert to fraction form
    530,551.50/730,539.63 = 399,918.96/x
  3. Step 3: Cross multiply
    530,551.50x = 730,539.63 × 399,918.96
  4. Step 4: Simplify right side
    530,551.50x = 292,156,649,068.39
  5. Step 5: Solve for x
    x = 292,156,649,068.39/530,551.50
  6. Step 6: Final answer
    x = 550,665.96

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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.