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Finding the Fourth Proportional to 887,505.71, 1,331,480 and 256,419.52

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Solution

The fourth proportional to 887,505.71, 1,331,480 and 256,419.52 is: 384,693.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,505.71 : 1,331,480 = 256,419.52 : x
  2. Step 2: Convert to fraction form
    887,505.71/1,331,480 = 256,419.52/x
  3. Step 3: Cross multiply
    887,505.71x = 1,331,480 × 256,419.52
  4. Step 4: Simplify right side
    887,505.71x = 341,417,462,489.60
  5. Step 5: Solve for x
    x = 341,417,462,489.60/887,505.71
  6. Step 6: Final answer
    x = 384,693.26

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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.