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Finding the Fourth Proportional to 570,107.52, 786,737.28 and 315,458.88

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Solution

The fourth proportional to 570,107.52, 786,737.28 and 315,458.88 is: 435,327.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,107.52 : 786,737.28 = 315,458.88 : x
  2. Step 2: Convert to fraction form
    570,107.52/786,737.28 = 315,458.88/x
  3. Step 3: Cross multiply
    570,107.52x = 786,737.28 × 315,458.88
  4. Step 4: Simplify right side
    570,107.52x = 248,183,261,203.05
  5. Step 5: Solve for x
    x = 248,183,261,203.05/570,107.52
  6. Step 6: Final answer
    x = 435,327.11

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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.