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Finding the Fourth Proportional to 885,700.80, 1,328,551.20 and 708,553.80

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Solution

The fourth proportional to 885,700.80, 1,328,551.20 and 708,553.80 is: 1,062,830.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,700.80 : 1,328,551.20 = 708,553.80 : x
  2. Step 2: Convert to fraction form
    885,700.80/1,328,551.20 = 708,553.80/x
  3. Step 3: Cross multiply
    885,700.80x = 1,328,551.20 × 708,553.80
  4. Step 4: Simplify right side
    885,700.80x = 941,350,001,254.56
  5. Step 5: Solve for x
    x = 941,350,001,254.56/885,700.80
  6. Step 6: Final answer
    x = 1,062,830.70

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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.