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Finding the Fourth Proportional to 693,727.92, 957,498.84 and 421,738.14

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Solution

The fourth proportional to 693,727.92, 957,498.84 and 421,738.14 is: 582,092.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,727.92 : 957,498.84 = 421,738.14 : x
  2. Step 2: Convert to fraction form
    693,727.92/957,498.84 = 421,738.14/x
  3. Step 3: Cross multiply
    693,727.92x = 957,498.84 × 421,738.14
  4. Step 4: Simplify right side
    693,727.92x = 403,813,779,833.76
  5. Step 5: Solve for x
    x = 403,813,779,833.76/693,727.92
  6. Step 6: Final answer
    x = 582,092.44

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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.