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Finding the Fourth Proportional to 887,655.20, 1,330,705.20 and 532,810.40

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Solution

The fourth proportional to 887,655.20, 1,330,705.20 and 532,810.40 is: 798,748.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,655.20 : 1,330,705.20 = 532,810.40 : x
  2. Step 2: Convert to fraction form
    887,655.20/1,330,705.20 = 532,810.40/x
  3. Step 3: Cross multiply
    887,655.20x = 1,330,705.20 × 532,810.40
  4. Step 4: Simplify right side
    887,655.20x = 709,013,569,894.08
  5. Step 5: Solve for x
    x = 709,013,569,894.08/887,655.20
  6. Step 6: Final answer
    x = 798,748.85

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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.