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Finding the Fourth Proportional to 898,290, 1,239,641.28 and 495,882

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Solution

The fourth proportional to 898,290, 1,239,641.28 and 495,882 is: 684,317.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,290 : 1,239,641.28 = 495,882 : x
  2. Step 2: Convert to fraction form
    898,290/1,239,641.28 = 495,882/x
  3. Step 3: Cross multiply
    898,290x = 1,239,641.28 × 495,882
  4. Step 4: Simplify right side
    898,290x = 614,715,797,208.96
  5. Step 5: Solve for x
    x = 614,715,797,208.96/898,290
  6. Step 6: Final answer
    x = 684,317.76

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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.