Home / 905,723.40-1,357,029.90-478,626.60

Finding the Fourth Proportional to 905,723.40, 1,357,029.90 and 478,626.60

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Solution

The fourth proportional to 905,723.40, 1,357,029.90 and 478,626.60 is: 717,118.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,723.40 : 1,357,029.90 = 478,626.60 : x
  2. Step 2: Convert to fraction form
    905,723.40/1,357,029.90 = 478,626.60/x
  3. Step 3: Cross multiply
    905,723.40x = 1,357,029.90 × 478,626.60
  4. Step 4: Simplify right side
    905,723.40x = 649,510,607,135.34
  5. Step 5: Solve for x
    x = 649,510,607,135.34/905,723.40
  6. Step 6: Final answer
    x = 717,118.06

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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.