Home / 931,425.75-1,397,680.76-391,642.97

Finding the Fourth Proportional to 931,425.75, 1,397,680.76 and 391,642.97

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Solution

The fourth proportional to 931,425.75, 1,397,680.76 and 391,642.97 is: 587,692.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,425.75 : 1,397,680.76 = 391,642.97 : x
  2. Step 2: Convert to fraction form
    931,425.75/1,397,680.76 = 391,642.97/x
  3. Step 3: Cross multiply
    931,425.75x = 1,397,680.76 × 391,642.97
  4. Step 4: Simplify right side
    931,425.75x = 547,391,837,948.96
  5. Step 5: Solve for x
    x = 547,391,837,948.96/931,425.75
  6. Step 6: Final answer
    x = 587,692.40

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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.