Home / 543,829.20-815,743.80-354,872.40

Finding the Fourth Proportional to 543,829.20, 815,743.80 and 354,872.40

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Solution

The fourth proportional to 543,829.20, 815,743.80 and 354,872.40 is: 532,308.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,829.20 : 815,743.80 = 354,872.40 : x
  2. Step 2: Convert to fraction form
    543,829.20/815,743.80 = 354,872.40/x
  3. Step 3: Cross multiply
    543,829.20x = 815,743.80 × 354,872.40
  4. Step 4: Simplify right side
    543,829.20x = 289,484,960,091.12
  5. Step 5: Solve for x
    x = 289,484,960,091.12/543,829.20
  6. Step 6: Final answer
    x = 532,308.60

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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.