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Finding the Fourth Proportional to 542,964.08, 749,356.92 and 313,520.78

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Solution

The fourth proportional to 542,964.08, 749,356.92 and 313,520.78 is: 432,697.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,964.08 : 749,356.92 = 313,520.78 : x
  2. Step 2: Convert to fraction form
    542,964.08/749,356.92 = 313,520.78/x
  3. Step 3: Cross multiply
    542,964.08x = 749,356.92 × 313,520.78
  4. Step 4: Simplify right side
    542,964.08x = 234,938,966,056.80
  5. Step 5: Solve for x
    x = 234,938,966,056.80/542,964.08
  6. Step 6: Final answer
    x = 432,697.07

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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.