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Finding the Fourth Proportional to 553,021.28, 762,761.92 and 417,060.95

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Solution

The fourth proportional to 553,021.28, 762,761.92 and 417,060.95 is: 575,236.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,021.28 : 762,761.92 = 417,060.95 : x
  2. Step 2: Convert to fraction form
    553,021.28/762,761.92 = 417,060.95/x
  3. Step 3: Cross multiply
    553,021.28x = 762,761.92 × 417,060.95
  4. Step 4: Simplify right side
    553,021.28x = 318,118,210,979.02
  5. Step 5: Solve for x
    x = 318,118,210,979.02/553,021.28
  6. Step 6: Final answer
    x = 575,236.84

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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.