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Finding the Fourth Proportional to 570,318.08, 787,027.20 and 315,654.08

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Solution

The fourth proportional to 570,318.08, 787,027.20 and 315,654.08 is: 435,596.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,318.08 : 787,027.20 = 315,654.08 : x
  2. Step 2: Convert to fraction form
    570,318.08/787,027.20 = 315,654.08/x
  3. Step 3: Cross multiply
    570,318.08x = 787,027.20 × 315,654.08
  4. Step 4: Simplify right side
    570,318.08x = 248,428,346,750.98
  5. Step 5: Solve for x
    x = 248,428,346,750.98/570,318.08
  6. Step 6: Final answer
    x = 435,596.13

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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.