Home / 717,482.26-990,089.07-395,185.43

Finding the Fourth Proportional to 717,482.26, 990,089.07 and 395,185.43

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Solution

The fourth proportional to 717,482.26, 990,089.07 and 395,185.43 is: 545,335.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,482.26 : 990,089.07 = 395,185.43 : x
  2. Step 2: Convert to fraction form
    717,482.26/990,089.07 = 395,185.43/x
  3. Step 3: Cross multiply
    717,482.26x = 990,089.07 × 395,185.43
  4. Step 4: Simplify right side
    717,482.26x = 391,268,778,082.45
  5. Step 5: Solve for x
    x = 391,268,778,082.45/717,482.26
  6. Step 6: Final answer
    x = 545,335.83

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Double scale
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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.