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Finding the Fourth Proportional to 521,382.88, 719,505.84 and 282,918.88

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Solution

The fourth proportional to 521,382.88, 719,505.84 and 282,918.88 is: 390,426.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,382.88 : 719,505.84 = 282,918.88 : x
  2. Step 2: Convert to fraction form
    521,382.88/719,505.84 = 282,918.88/x
  3. Step 3: Cross multiply
    521,382.88x = 719,505.84 × 282,918.88
  4. Step 4: Simplify right side
    521,382.88x = 203,561,786,406.26
  5. Step 5: Solve for x
    x = 203,561,786,406.26/521,382.88
  6. Step 6: Final answer
    x = 390,426.68

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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.