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Finding the Fourth Proportional to 625,118.33, 862,661.16 and 338,638.07

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Solution

The fourth proportional to 625,118.33, 862,661.16 and 338,638.07 is: 467,319.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,118.33 : 862,661.16 = 338,638.07 : x
  2. Step 2: Convert to fraction form
    625,118.33/862,661.16 = 338,638.07/x
  3. Step 3: Cross multiply
    625,118.33x = 862,661.16 × 338,638.07
  4. Step 4: Simplify right side
    625,118.33x = 292,129,905,973.06
  5. Step 5: Solve for x
    x = 292,129,905,973.06/625,118.33
  6. Step 6: Final answer
    x = 467,319.38

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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.