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Finding the Fourth Proportional to 986,679.89, 1,480,019.90 and 238,725.89

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Solution

The fourth proportional to 986,679.89, 1,480,019.90 and 238,725.89 is: 358,088.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,679.89 : 1,480,019.90 = 238,725.89 : x
  2. Step 2: Convert to fraction form
    986,679.89/1,480,019.90 = 238,725.89/x
  3. Step 3: Cross multiply
    986,679.89x = 1,480,019.90 × 238,725.89
  4. Step 4: Simplify right side
    986,679.89x = 353,319,059,251.48
  5. Step 5: Solve for x
    x = 353,319,059,251.48/986,679.89
  6. Step 6: Final answer
    x = 358,088.84

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.