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Finding the Fourth Proportional to 642,833.28, 887,117.95 and 370,957.60

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Solution

The fourth proportional to 642,833.28, 887,117.95 and 370,957.60 is: 511,926.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,833.28 : 887,117.95 = 370,957.60 : x
  2. Step 2: Convert to fraction form
    642,833.28/887,117.95 = 370,957.60/x
  3. Step 3: Cross multiply
    642,833.28x = 887,117.95 × 370,957.60
  4. Step 4: Simplify right side
    642,833.28x = 329,083,145,648.92
  5. Step 5: Solve for x
    x = 329,083,145,648.92/642,833.28
  6. Step 6: Final answer
    x = 511,926.12

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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.