Home / 812,902.02-1,219,471.83-391,831.62

Finding the Fourth Proportional to 812,902.02, 1,219,471.83 and 391,831.62

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Solution

The fourth proportional to 812,902.02, 1,219,471.83 and 391,831.62 is: 587,804.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,902.02 : 1,219,471.83 = 391,831.62 : x
  2. Step 2: Convert to fraction form
    812,902.02/1,219,471.83 = 391,831.62/x
  3. Step 3: Cross multiply
    812,902.02x = 1,219,471.83 × 391,831.62
  4. Step 4: Simplify right side
    812,902.02x = 477,827,622,693.27
  5. Step 5: Solve for x
    x = 477,827,622,693.27/812,902.02
  6. Step 6: Final answer
    x = 587,804.69

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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.