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Finding the Fourth Proportional to 722,250.80, 996,705.20 and 399,960.51

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Solution

The fourth proportional to 722,250.80, 996,705.20 and 399,960.51 is: 551,945.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,250.80 : 996,705.20 = 399,960.51 : x
  2. Step 2: Convert to fraction form
    722,250.80/996,705.20 = 399,960.51/x
  3. Step 3: Cross multiply
    722,250.80x = 996,705.20 × 399,960.51
  4. Step 4: Simplify right side
    722,250.80x = 398,642,720,111.65
  5. Step 5: Solve for x
    x = 398,642,720,111.65/722,250.80
  6. Step 6: Final answer
    x = 551,945.00

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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.