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Finding the Fourth Proportional to 555,720.38, 766,894.92 and 301,071.56

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Solution

The fourth proportional to 555,720.38, 766,894.92 and 301,071.56 is: 415,479.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,720.38 : 766,894.92 = 301,071.56 : x
  2. Step 2: Convert to fraction form
    555,720.38/766,894.92 = 301,071.56/x
  3. Step 3: Cross multiply
    555,720.38x = 766,894.92 × 301,071.56
  4. Step 4: Simplify right side
    555,720.38x = 230,890,249,920.48
  5. Step 5: Solve for x
    x = 230,890,249,920.48/555,720.38
  6. Step 6: Final answer
    x = 415,479.18

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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.