Home / 840,490.65-1,254,180.53-749,910.78

Finding the Fourth Proportional to 840,490.65, 1,254,180.53 and 749,910.78

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Solution

The fourth proportional to 840,490.65, 1,254,180.53 and 749,910.78 is: 1,119,017.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,490.65 : 1,254,180.53 = 749,910.78 : x
  2. Step 2: Convert to fraction form
    840,490.65/1,254,180.53 = 749,910.78/x
  3. Step 3: Cross multiply
    840,490.65x = 1,254,180.53 × 749,910.78
  4. Step 4: Simplify right side
    840,490.65x = 940,523,501,387.89
  5. Step 5: Solve for x
    x = 940,523,501,387.89/840,490.65
  6. Step 6: Final answer
    x = 1,119,017.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.