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Finding the Fourth Proportional to 526,723.13, 726,751.51 and 319,987.38

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Solution

The fourth proportional to 526,723.13, 726,751.51 and 319,987.38 is: 441,505.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,723.13 : 726,751.51 = 319,987.38 : x
  2. Step 2: Convert to fraction form
    526,723.13/726,751.51 = 319,987.38/x
  3. Step 3: Cross multiply
    526,723.13x = 726,751.51 × 319,987.38
  4. Step 4: Simplify right side
    526,723.13x = 232,551,311,812.89
  5. Step 5: Solve for x
    x = 232,551,311,812.89/526,723.13
  6. Step 6: Final answer
    x = 441,505.79

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1.5x scale

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.