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Finding the Fourth Proportional to 657,999.30, 986,998.95 and 551,711.10

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Solution

The fourth proportional to 657,999.30, 986,998.95 and 551,711.10 is: 827,566.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,999.30 : 986,998.95 = 551,711.10 : x
  2. Step 2: Convert to fraction form
    657,999.30/986,998.95 = 551,711.10/x
  3. Step 3: Cross multiply
    657,999.30x = 986,998.95 × 551,711.10
  4. Step 4: Simplify right side
    657,999.30x = 544,538,276,403.35
  5. Step 5: Solve for x
    x = 544,538,276,403.35/657,999.30
  6. Step 6: Final answer
    x = 827,566.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.