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Finding the Fourth Proportional to 488,315.40, 732,905.10 and 288,385.80

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Solution

The fourth proportional to 488,315.40, 732,905.10 and 288,385.80 is: 432,833.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,315.40 : 732,905.10 = 288,385.80 : x
  2. Step 2: Convert to fraction form
    488,315.40/732,905.10 = 288,385.80/x
  3. Step 3: Cross multiply
    488,315.40x = 732,905.10 × 288,385.80
  4. Step 4: Simplify right side
    488,315.40x = 211,359,423,587.58
  5. Step 5: Solve for x
    x = 211,359,423,587.58/488,315.40
  6. Step 6: Final answer
    x = 432,833.83

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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.