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Finding the Fourth Proportional to 542,671, 748,885.98 and 300,990.58

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Solution

The fourth proportional to 542,671, 748,885.98 and 300,990.58 is: 415,367.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,671 : 748,885.98 = 300,990.58 : x
  2. Step 2: Convert to fraction form
    542,671/748,885.98 = 300,990.58/x
  3. Step 3: Cross multiply
    542,671x = 748,885.98 × 300,990.58
  4. Step 4: Simplify right side
    542,671x = 225,407,625,474.07
  5. Step 5: Solve for x
    x = 225,407,625,474.07/542,671
  6. Step 6: Final answer
    x = 415,367.00

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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.