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Finding the Fourth Proportional to 663,089.54, 915,141.34 and 372,701.50

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Solution

The fourth proportional to 663,089.54, 915,141.34 and 372,701.50 is: 514,371.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,089.54 : 915,141.34 = 372,701.50 : x
  2. Step 2: Convert to fraction form
    663,089.54/915,141.34 = 372,701.50/x
  3. Step 3: Cross multiply
    663,089.54x = 915,141.34 × 372,701.50
  4. Step 4: Simplify right side
    663,089.54x = 341,074,548,308.03
  5. Step 5: Solve for x
    x = 341,074,548,308.03/663,089.54
  6. Step 6: Final answer
    x = 514,371.79

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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.