Home / 738,155.66-1,018,654.85-398,623.91

Finding the Fourth Proportional to 738,155.66, 1,018,654.85 and 398,623.91

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Solution

The fourth proportional to 738,155.66, 1,018,654.85 and 398,623.91 is: 550,101.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,155.66 : 1,018,654.85 = 398,623.91 : x
  2. Step 2: Convert to fraction form
    738,155.66/1,018,654.85 = 398,623.91/x
  3. Step 3: Cross multiply
    738,155.66x = 1,018,654.85 × 398,623.91
  4. Step 4: Simplify right side
    738,155.66x = 406,060,175,150.75
  5. Step 5: Solve for x
    x = 406,060,175,150.75/738,155.66
  6. Step 6: Final answer
    x = 550,101.02

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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.