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Finding the Fourth Proportional to 570,744.92, 787,672.32 and 316,119.80

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Solution

The fourth proportional to 570,744.92, 787,672.32 and 316,119.80 is: 436,269.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,744.92 : 787,672.32 = 316,119.80 : x
  2. Step 2: Convert to fraction form
    570,744.92/787,672.32 = 316,119.80/x
  3. Step 3: Cross multiply
    570,744.92x = 787,672.32 × 316,119.80
  4. Step 4: Simplify right side
    570,744.92x = 248,998,817,047.67
  5. Step 5: Solve for x
    x = 248,998,817,047.67/570,744.92
  6. Step 6: Final answer
    x = 436,269.88

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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.