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Finding the Fourth Proportional to 609,171.65, 910,055.22 and 394,188.18

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Solution

The fourth proportional to 609,171.65, 910,055.22 and 394,188.18 is: 588,886.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,171.65 : 910,055.22 = 394,188.18 : x
  2. Step 2: Convert to fraction form
    609,171.65/910,055.22 = 394,188.18/x
  3. Step 3: Cross multiply
    609,171.65x = 910,055.22 × 394,188.18
  4. Step 4: Simplify right side
    609,171.65x = 358,733,010,871.30
  5. Step 5: Solve for x
    x = 358,733,010,871.30/609,171.65
  6. Step 6: Final answer
    x = 588,886.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.