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Finding the Fourth Proportional to 570,494.04, 787,278.88 and 312,366.30

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Solution

The fourth proportional to 570,494.04, 787,278.88 and 312,366.30 is: 431,063.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,494.04 : 787,278.88 = 312,366.30 : x
  2. Step 2: Convert to fraction form
    570,494.04/787,278.88 = 312,366.30/x
  3. Step 3: Cross multiply
    570,494.04x = 787,278.88 × 312,366.30
  4. Step 4: Simplify right side
    570,494.04x = 245,919,388,251.91
  5. Step 5: Solve for x
    x = 245,919,388,251.91/570,494.04
  6. Step 6: Final answer
    x = 431,063.91

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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.