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Finding the Fourth Proportional to 680,704.80, 1,020,020.40 and 574,951.20

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Solution

The fourth proportional to 680,704.80, 1,020,020.40 and 574,951.20 is: 861,551.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,704.80 : 1,020,020.40 = 574,951.20 : x
  2. Step 2: Convert to fraction form
    680,704.80/1,020,020.40 = 574,951.20/x
  3. Step 3: Cross multiply
    680,704.80x = 1,020,020.40 × 574,951.20
  4. Step 4: Simplify right side
    680,704.80x = 586,461,953,004.48
  5. Step 5: Solve for x
    x = 586,461,953,004.48/680,704.80
  6. Step 6: Final answer
    x = 861,551.08

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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.