Home / 693,419.70-1,040,129.55-426,314.10

Finding the Fourth Proportional to 693,419.70, 1,040,129.55 and 426,314.10

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Solution

The fourth proportional to 693,419.70, 1,040,129.55 and 426,314.10 is: 639,471.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,419.70 : 1,040,129.55 = 426,314.10 : x
  2. Step 2: Convert to fraction form
    693,419.70/1,040,129.55 = 426,314.10/x
  3. Step 3: Cross multiply
    693,419.70x = 1,040,129.55 × 426,314.10
  4. Step 4: Simplify right side
    693,419.70x = 443,421,892,991.66
  5. Step 5: Solve for x
    x = 443,421,892,991.66/693,419.70
  6. Step 6: Final answer
    x = 639,471.15

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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.