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Finding the Fourth Proportional to 986,998.60, 1,480,497.90 and 455,557.60

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Solution

The fourth proportional to 986,998.60, 1,480,497.90 and 455,557.60 is: 683,336.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,998.60 : 1,480,497.90 = 455,557.60 : x
  2. Step 2: Convert to fraction form
    986,998.60/1,480,497.90 = 455,557.60/x
  3. Step 3: Cross multiply
    986,998.60x = 1,480,497.90 × 455,557.60
  4. Step 4: Simplify right side
    986,998.60x = 674,452,070,129.04
  5. Step 5: Solve for x
    x = 674,452,070,129.04/986,998.60
  6. Step 6: Final answer
    x = 683,336.40

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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.