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Finding the Fourth Proportional to 434,543.20, 651,814.80 and 418,796.80

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Solution

The fourth proportional to 434,543.20, 651,814.80 and 418,796.80 is: 628,195.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,543.20 : 651,814.80 = 418,796.80 : x
  2. Step 2: Convert to fraction form
    434,543.20/651,814.80 = 418,796.80/x
  3. Step 3: Cross multiply
    434,543.20x = 651,814.80 × 418,796.80
  4. Step 4: Simplify right side
    434,543.20x = 272,977,952,432.64
  5. Step 5: Solve for x
    x = 272,977,952,432.64/434,543.20
  6. Step 6: Final answer
    x = 628,195.20

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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.