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Finding the Fourth Proportional to 542,614.68, 748,846.62 and 300,920.40

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Solution

The fourth proportional to 542,614.68, 748,846.62 and 300,920.40 is: 415,291.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,614.68 : 748,846.62 = 300,920.40 : x
  2. Step 2: Convert to fraction form
    542,614.68/748,846.62 = 300,920.40/x
  3. Step 3: Cross multiply
    542,614.68x = 748,846.62 × 300,920.40
  4. Step 4: Simplify right side
    542,614.68x = 225,343,224,429.05
  5. Step 5: Solve for x
    x = 225,343,224,429.05/542,614.68
  6. Step 6: Final answer
    x = 415,291.43

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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.