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Finding the Fourth Proportional to 693,701.46, 957,417.57 and 421,854.66

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Solution

The fourth proportional to 693,701.46, 957,417.57 and 421,854.66 is: 582,226.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,701.46 : 957,417.57 = 421,854.66 : x
  2. Step 2: Convert to fraction form
    693,701.46/957,417.57 = 421,854.66/x
  3. Step 3: Cross multiply
    693,701.46x = 957,417.57 × 421,854.66
  4. Step 4: Simplify right side
    693,701.46x = 403,891,063,470.38
  5. Step 5: Solve for x
    x = 403,891,063,470.38/693,701.46
  6. Step 6: Final answer
    x = 582,226.05

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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.