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Finding the Fourth Proportional to 542,785.86, 748,554.21 and 338,855.67

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Solution

The fourth proportional to 542,785.86, 748,554.21 and 338,855.67 is: 467,314.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,785.86 : 748,554.21 = 338,855.67 : x
  2. Step 2: Convert to fraction form
    542,785.86/748,554.21 = 338,855.67/x
  3. Step 3: Cross multiply
    542,785.86x = 748,554.21 × 338,855.67
  4. Step 4: Simplify right side
    542,785.86x = 253,651,838,360.87
  5. Step 5: Solve for x
    x = 253,651,838,360.87/542,785.86
  6. Step 6: Final answer
    x = 467,314.75

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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.