Home / 722,016.06-996,643.89-420,210.06

Finding the Fourth Proportional to 722,016.06, 996,643.89 and 420,210.06

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Solution

The fourth proportional to 722,016.06, 996,643.89 and 420,210.06 is: 580,042.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,016.06 : 996,643.89 = 420,210.06 : x
  2. Step 2: Convert to fraction form
    722,016.06/996,643.89 = 420,210.06/x
  3. Step 3: Cross multiply
    722,016.06x = 996,643.89 × 420,210.06
  4. Step 4: Simplify right side
    722,016.06x = 418,799,788,815.53
  5. Step 5: Solve for x
    x = 418,799,788,815.53/722,016.06
  6. Step 6: Final answer
    x = 580,042.21

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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.