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Finding the Fourth Proportional to 570,589.68, 787,417.56 and 315,957.36

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Solution

The fourth proportional to 570,589.68, 787,417.56 and 315,957.36 is: 436,023.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,589.68 : 787,417.56 = 315,957.36 : x
  2. Step 2: Convert to fraction form
    570,589.68/787,417.56 = 315,957.36/x
  3. Step 3: Cross multiply
    570,589.68x = 787,417.56 × 315,957.36
  4. Step 4: Simplify right side
    570,589.68x = 248,790,373,475.24
  5. Step 5: Solve for x
    x = 248,790,373,475.24/570,589.68
  6. Step 6: Final answer
    x = 436,023.26

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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.