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Finding the Fourth Proportional to 468,066.24, 645,345.72 and 390,652.56

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Solution

The fourth proportional to 468,066.24, 645,345.72 and 390,652.56 is: 538,611.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,066.24 : 645,345.72 = 390,652.56 : x
  2. Step 2: Convert to fraction form
    468,066.24/645,345.72 = 390,652.56/x
  3. Step 3: Cross multiply
    468,066.24x = 645,345.72 × 390,652.56
  4. Step 4: Simplify right side
    468,066.24x = 252,105,957,603.04
  5. Step 5: Solve for x
    x = 252,105,957,603.04/468,066.24
  6. Step 6: Final answer
    x = 538,611.71

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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.