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Finding the Fourth Proportional to 547,568.80, 823,102.80 and 390,882.40

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Solution

The fourth proportional to 547,568.80, 823,102.80 and 390,882.40 is: 587,572.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,568.80 : 823,102.80 = 390,882.40 : x
  2. Step 2: Convert to fraction form
    547,568.80/823,102.80 = 390,882.40/x
  3. Step 3: Cross multiply
    547,568.80x = 823,102.80 × 390,882.40
  4. Step 4: Simplify right side
    547,568.80x = 321,736,397,910.72
  5. Step 5: Solve for x
    x = 321,736,397,910.72/547,568.80
  6. Step 6: Final answer
    x = 587,572.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.