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Finding the Fourth Proportional to 543,041.12, 749,432.56 and 313,608.04

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Solution

The fourth proportional to 543,041.12, 749,432.56 and 313,608.04 is: 432,799.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,041.12 : 749,432.56 = 313,608.04 : x
  2. Step 2: Convert to fraction form
    543,041.12/749,432.56 = 313,608.04/x
  3. Step 3: Cross multiply
    543,041.12x = 749,432.56 × 313,608.04
  4. Step 4: Simplify right side
    543,041.12x = 235,028,076,253.78
  5. Step 5: Solve for x
    x = 235,028,076,253.78/543,041.12
  6. Step 6: Final answer
    x = 432,799.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.