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Finding the Fourth Proportional to 410,043.60, 615,065.40 and 372,645.90

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Solution

The fourth proportional to 410,043.60, 615,065.40 and 372,645.90 is: 558,968.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,043.60 : 615,065.40 = 372,645.90 : x
  2. Step 2: Convert to fraction form
    410,043.60/615,065.40 = 372,645.90/x
  3. Step 3: Cross multiply
    410,043.60x = 615,065.40 × 372,645.90
  4. Step 4: Simplify right side
    410,043.60x = 229,201,599,541.86
  5. Step 5: Solve for x
    x = 229,201,599,541.86/410,043.60
  6. Step 6: Final answer
    x = 558,968.85

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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.