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Finding the Fourth Proportional to 542,510.40, 748,634.34 and 300,778.84

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Solution

The fourth proportional to 542,510.40, 748,634.34 and 300,778.84 is: 415,058.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,510.40 : 748,634.34 = 300,778.84 : x
  2. Step 2: Convert to fraction form
    542,510.40/748,634.34 = 300,778.84/x
  3. Step 3: Cross multiply
    542,510.40x = 748,634.34 × 300,778.84
  4. Step 4: Simplify right side
    542,510.40x = 225,173,368,369.37
  5. Step 5: Solve for x
    x = 225,173,368,369.37/542,510.40
  6. Step 6: Final answer
    x = 415,058.16

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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.