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Finding the Fourth Proportional to 680,625.60, 1,020,938.40 and 574,337.40

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Solution

The fourth proportional to 680,625.60, 1,020,938.40 and 574,337.40 is: 861,506.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,625.60 : 1,020,938.40 = 574,337.40 : x
  2. Step 2: Convert to fraction form
    680,625.60/1,020,938.40 = 574,337.40/x
  3. Step 3: Cross multiply
    680,625.60x = 1,020,938.40 × 574,337.40
  4. Step 4: Simplify right side
    680,625.60x = 586,363,106,216.16
  5. Step 5: Solve for x
    x = 586,363,106,216.16/680,625.60
  6. Step 6: Final answer
    x = 861,506.10

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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.