Home / 1,117,639.55-1,676,474.72-318,920.86

Finding the Fourth Proportional to 1,117,639.55, 1,676,474.72 and 318,920.86

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Solution

The fourth proportional to 1,117,639.55, 1,676,474.72 and 318,920.86 is: 478,385.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117,639.55 : 1,676,474.72 = 318,920.86 : x
  2. Step 2: Convert to fraction form
    1,117,639.55/1,676,474.72 = 318,920.86/x
  3. Step 3: Cross multiply
    1,117,639.55x = 1,676,474.72 × 318,920.86
  4. Step 4: Simplify right side
    1,117,639.55x = 534,662,761,167.63
  5. Step 5: Solve for x
    x = 534,662,761,167.63/1,117,639.55
  6. Step 6: Final answer
    x = 478,385.68

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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.