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Finding the Fourth Proportional to 543,988.60, 814,370.10 and 404,366.20

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Solution

The fourth proportional to 543,988.60, 814,370.10 and 404,366.20 is: 605,350.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,988.60 : 814,370.10 = 404,366.20 : x
  2. Step 2: Convert to fraction form
    543,988.60/814,370.10 = 404,366.20/x
  3. Step 3: Cross multiply
    543,988.60x = 814,370.10 × 404,366.20
  4. Step 4: Simplify right side
    543,988.60x = 329,303,742,730.62
  5. Step 5: Solve for x
    x = 329,303,742,730.62/543,988.60
  6. Step 6: Final answer
    x = 605,350.45

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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.