Home / 859,761.90-1,287,665.50-499,039.38

Finding the Fourth Proportional to 859,761.90, 1,287,665.50 and 499,039.38

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Solution

The fourth proportional to 859,761.90, 1,287,665.50 and 499,039.38 is: 747,411.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,761.90 : 1,287,665.50 = 499,039.38 : x
  2. Step 2: Convert to fraction form
    859,761.90/1,287,665.50 = 499,039.38/x
  3. Step 3: Cross multiply
    859,761.90x = 1,287,665.50 × 499,039.38
  4. Step 4: Simplify right side
    859,761.90x = 642,595,792,767.39
  5. Step 5: Solve for x
    x = 642,595,792,767.39/859,761.90
  6. Step 6: Final answer
    x = 747,411.34

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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.