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Finding the Fourth Proportional to 570,732.89, 787,583.25 and 312,611.00

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Solution

The fourth proportional to 570,732.89, 787,583.25 and 312,611.00 is: 431,387.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,732.89 : 787,583.25 = 312,611.00 : x
  2. Step 2: Convert to fraction form
    570,732.89/787,583.25 = 312,611.00/x
  3. Step 3: Cross multiply
    570,732.89x = 787,583.25 × 312,611.00
  4. Step 4: Simplify right side
    570,732.89x = 246,207,183,427.83
  5. Step 5: Solve for x
    x = 246,207,183,427.83/570,732.89
  6. Step 6: Final answer
    x = 431,387.76

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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.