Home / 1,272,456.04-1,908,634.20-431,007.76

Finding the Fourth Proportional to 1,272,456.04, 1,908,634.20 and 431,007.76

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Solution

The fourth proportional to 1,272,456.04, 1,908,634.20 and 431,007.76 is: 646,494.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,456.04 : 1,908,634.20 = 431,007.76 : x
  2. Step 2: Convert to fraction form
    1,272,456.04/1,908,634.20 = 431,007.76/x
  3. Step 3: Cross multiply
    1,272,456.04x = 1,908,634.20 × 431,007.76
  4. Step 4: Simplify right side
    1,272,456.04x = 822,636,151,201.39
  5. Step 5: Solve for x
    x = 822,636,151,201.39/1,272,456.04
  6. Step 6: Final answer
    x = 646,494.75

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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.