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Finding the Fourth Proportional to 614,040.75, 847,343.43 and 338,389.65

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Solution

The fourth proportional to 614,040.75, 847,343.43 and 338,389.65 is: 466,959.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,040.75 : 847,343.43 = 338,389.65 : x
  2. Step 2: Convert to fraction form
    614,040.75/847,343.43 = 338,389.65/x
  3. Step 3: Cross multiply
    614,040.75x = 847,343.43 × 338,389.65
  4. Step 4: Simplify right side
    614,040.75x = 286,732,246,707.50
  5. Step 5: Solve for x
    x = 286,732,246,707.50/614,040.75
  6. Step 6: Final answer
    x = 466,959.64

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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.