Home / 722,085.60-996,514.96-399,831.28

Finding the Fourth Proportional to 722,085.60, 996,514.96 and 399,831.28

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Solution

The fourth proportional to 722,085.60, 996,514.96 and 399,831.28 is: 551,787.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,085.60 : 996,514.96 = 399,831.28 : x
  2. Step 2: Convert to fraction form
    722,085.60/996,514.96 = 399,831.28/x
  3. Step 3: Cross multiply
    722,085.60x = 996,514.96 × 399,831.28
  4. Step 4: Simplify right side
    722,085.60x = 398,437,851,995.95
  5. Step 5: Solve for x
    x = 398,437,851,995.95/722,085.60
  6. Step 6: Final answer
    x = 551,787.56

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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.