Home / 717,875.12-990,674.31-395,596.75

Finding the Fourth Proportional to 717,875.12, 990,674.31 and 395,596.75

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Solution

The fourth proportional to 717,875.12, 990,674.31 and 395,596.75 is: 545,927.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,875.12 : 990,674.31 = 395,596.75 : x
  2. Step 2: Convert to fraction form
    717,875.12/990,674.31 = 395,596.75/x
  3. Step 3: Cross multiply
    717,875.12x = 990,674.31 × 395,596.75
  4. Step 4: Simplify right side
    717,875.12x = 391,907,537,344.49
  5. Step 5: Solve for x
    x = 391,907,537,344.49/717,875.12
  6. Step 6: Final answer
    x = 545,927.18

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Double scale
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Similar ratio
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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.