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Finding the Fourth Proportional to 403,061.40, 604,592.10 and 340,853.40

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Solution

The fourth proportional to 403,061.40, 604,592.10 and 340,853.40 is: 511,280.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,061.40 : 604,592.10 = 340,853.40 : x
  2. Step 2: Convert to fraction form
    403,061.40/604,592.10 = 340,853.40/x
  3. Step 3: Cross multiply
    403,061.40x = 604,592.10 × 340,853.40
  4. Step 4: Simplify right side
    403,061.40x = 206,077,272,898.14
  5. Step 5: Solve for x
    x = 206,077,272,898.14/403,061.40
  6. Step 6: Final answer
    x = 511,280.10

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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.