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Finding the Fourth Proportional to 542,507.38, 748,630.20 and 300,775.84

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Solution

The fourth proportional to 542,507.38, 748,630.20 and 300,775.84 is: 415,054.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,507.38 : 748,630.20 = 300,775.84 : x
  2. Step 2: Convert to fraction form
    542,507.38/748,630.20 = 300,775.84/x
  3. Step 3: Cross multiply
    542,507.38x = 748,630.20 × 300,775.84
  4. Step 4: Simplify right side
    542,507.38x = 225,169,877,254.37
  5. Step 5: Solve for x
    x = 225,169,877,254.37/542,507.38
  6. Step 6: Final answer
    x = 415,054.04

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Similar ratio
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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.