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Finding the Fourth Proportional to 8,700,934.80, 13,051,402.20 and 6,461,446.80

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Solution

The fourth proportional to 8,700,934.80, 13,051,402.20 and 6,461,446.80 is: 9,692,170.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700,934.80 : 13,051,402.20 = 6,461,446.80 : x
  2. Step 2: Convert to fraction form
    8,700,934.80/13,051,402.20 = 6,461,446.80/x
  3. Step 3: Cross multiply
    8,700,934.80x = 13,051,402.20 × 6,461,446.80
  4. Step 4: Simplify right side
    8,700,934.80x = 84,330,940,980,702.95
  5. Step 5: Solve for x
    x = 84,330,940,980,702.95/8,700,934.80
  6. Step 6: Final answer
    x = 9,692,170.20

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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.