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Finding the Fourth Proportional to 542,392.24, 748,501.28 and 300,674.20

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Solution

The fourth proportional to 542,392.24, 748,501.28 and 300,674.20 is: 414,930.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,392.24 : 748,501.28 = 300,674.20 : x
  2. Step 2: Convert to fraction form
    542,392.24/748,501.28 = 300,674.20/x
  3. Step 3: Cross multiply
    542,392.24x = 748,501.28 × 300,674.20
  4. Step 4: Simplify right side
    542,392.24x = 225,055,023,562.98
  5. Step 5: Solve for x
    x = 225,055,023,562.98/542,392.24
  6. Step 6: Final answer
    x = 414,930.39

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Double scale
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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.