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Finding the Fourth Proportional to 658,346.64, 908,267.88 and 486,676.76

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Solution

The fourth proportional to 658,346.64, 908,267.88 and 486,676.76 is: 671,428.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,346.64 : 908,267.88 = 486,676.76 : x
  2. Step 2: Convert to fraction form
    658,346.64/908,267.88 = 486,676.76/x
  3. Step 3: Cross multiply
    658,346.64x = 908,267.88 × 486,676.76
  4. Step 4: Simplify right side
    658,346.64x = 442,032,869,050.47
  5. Step 5: Solve for x
    x = 442,032,869,050.47/658,346.64
  6. Step 6: Final answer
    x = 671,428.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.