Home / 915,929.40-1,373,505.30-442,759.80

Finding the Fourth Proportional to 915,929.40, 1,373,505.30 and 442,759.80

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Solution

The fourth proportional to 915,929.40, 1,373,505.30 and 442,759.80 is: 663,951.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,929.40 : 1,373,505.30 = 442,759.80 : x
  2. Step 2: Convert to fraction form
    915,929.40/1,373,505.30 = 442,759.80/x
  3. Step 3: Cross multiply
    915,929.40x = 1,373,505.30 × 442,759.80
  4. Step 4: Simplify right side
    915,929.40x = 608,132,931,926.94
  5. Step 5: Solve for x
    x = 608,132,931,926.94/915,929.40
  6. Step 6: Final answer
    x = 663,951.75

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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.