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Finding the Fourth Proportional to 472,246.20, 708,369.30 and 401,387.40

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Solution

The fourth proportional to 472,246.20, 708,369.30 and 401,387.40 is: 602,081.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,246.20 : 708,369.30 = 401,387.40 : x
  2. Step 2: Convert to fraction form
    472,246.20/708,369.30 = 401,387.40/x
  3. Step 3: Cross multiply
    472,246.20x = 708,369.30 × 401,387.40
  4. Step 4: Simplify right side
    472,246.20x = 284,330,511,566.82
  5. Step 5: Solve for x
    x = 284,330,511,566.82/472,246.20
  6. Step 6: Final answer
    x = 602,081.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.