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Finding the Fourth Proportional to 542,405.80, 813,608.70 and 374,444.20

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Solution

The fourth proportional to 542,405.80, 813,608.70 and 374,444.20 is: 561,666.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,405.80 : 813,608.70 = 374,444.20 : x
  2. Step 2: Convert to fraction form
    542,405.80/813,608.70 = 374,444.20/x
  3. Step 3: Cross multiply
    542,405.80x = 813,608.70 × 374,444.20
  4. Step 4: Simplify right side
    542,405.80x = 304,651,058,784.54
  5. Step 5: Solve for x
    x = 304,651,058,784.54/542,405.80
  6. Step 6: Final answer
    x = 561,666.30

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Similar ratio
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1.5x scale

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.