Home / 904,917.90-1,356,912.54-478,683.78

Finding the Fourth Proportional to 904,917.90, 1,356,912.54 and 478,683.78

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Solution

The fourth proportional to 904,917.90, 1,356,912.54 and 478,683.78 is: 717,780.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,917.90 : 1,356,912.54 = 478,683.78 : x
  2. Step 2: Convert to fraction form
    904,917.90/1,356,912.54 = 478,683.78/x
  3. Step 3: Cross multiply
    904,917.90x = 1,356,912.54 × 478,683.78
  4. Step 4: Simplify right side
    904,917.90x = 649,532,023,776.60
  5. Step 5: Solve for x
    x = 649,532,023,776.60/904,917.90
  6. Step 6: Final answer
    x = 717,780.06

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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.