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Finding the Fourth Proportional to 555,751.11, 766,513.35 and 478,358.46

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Solution

The fourth proportional to 555,751.11, 766,513.35 and 478,358.46 is: 659,770.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,751.11 : 766,513.35 = 478,358.46 : x
  2. Step 2: Convert to fraction form
    555,751.11/766,513.35 = 478,358.46/x
  3. Step 3: Cross multiply
    555,751.11x = 766,513.35 × 478,358.46
  4. Step 4: Simplify right side
    555,751.11x = 366,668,145,675.44
  5. Step 5: Solve for x
    x = 366,668,145,675.44/555,751.11
  6. Step 6: Final answer
    x = 659,770.42

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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.