Home / 717,755.12-990,546.14-395,465.14

Finding the Fourth Proportional to 717,755.12, 990,546.14 and 395,465.14

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Solution

The fourth proportional to 717,755.12, 990,546.14 and 395,465.14 is: 545,766.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,755.12 : 990,546.14 = 395,465.14 : x
  2. Step 2: Convert to fraction form
    717,755.12/990,546.14 = 395,465.14/x
  3. Step 3: Cross multiply
    717,755.12x = 990,546.14 × 395,465.14
  4. Step 4: Simplify right side
    717,755.12x = 391,726,463,474.34
  5. Step 5: Solve for x
    x = 391,726,463,474.34/717,755.12
  6. Step 6: Final answer
    x = 545,766.17

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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.