Home / 719,141.45-992,414.27-396,851.55

Finding the Fourth Proportional to 719,141.45, 992,414.27 and 396,851.55

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Solution

The fourth proportional to 719,141.45, 992,414.27 and 396,851.55 is: 547,654.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,141.45 : 992,414.27 = 396,851.55 : x
  2. Step 2: Convert to fraction form
    719,141.45/992,414.27 = 396,851.55/x
  3. Step 3: Cross multiply
    719,141.45x = 992,414.27 × 396,851.55
  4. Step 4: Simplify right side
    719,141.45x = 393,841,139,307.36
  5. Step 5: Solve for x
    x = 393,841,139,307.36/719,141.45
  6. Step 6: Final answer
    x = 547,654.63

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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.