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Finding the Fourth Proportional to 909,909.10, 1,364,863.65 and 611,310.70

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Solution

The fourth proportional to 909,909.10, 1,364,863.65 and 611,310.70 is: 916,966.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,909.10 : 1,364,863.65 = 611,310.70 : x
  2. Step 2: Convert to fraction form
    909,909.10/1,364,863.65 = 611,310.70/x
  3. Step 3: Cross multiply
    909,909.10x = 1,364,863.65 × 611,310.70
  4. Step 4: Simplify right side
    909,909.10x = 834,355,753,286.06
  5. Step 5: Solve for x
    x = 834,355,753,286.06/909,909.10
  6. Step 6: Final answer
    x = 916,966.05

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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.