Home / 1,428,508.76-2,142,701.70-431,207

Finding the Fourth Proportional to 1,428,508.76, 2,142,701.70 and 431,207

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Solution

The fourth proportional to 1,428,508.76, 2,142,701.70 and 431,207 is: 646,791.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,508.76 : 2,142,701.70 = 431,207 : x
  2. Step 2: Convert to fraction form
    1,428,508.76/2,142,701.70 = 431,207/x
  3. Step 3: Cross multiply
    1,428,508.76x = 2,142,701.70 × 431,207
  4. Step 4: Simplify right side
    1,428,508.76x = 923,947,971,951.90
  5. Step 5: Solve for x
    x = 923,947,971,951.90/1,428,508.76
  6. Step 6: Final answer
    x = 646,791.95

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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.