Home / 663,988,576.80-995,982,865.20-434,665,005.60

Finding the Fourth Proportional to 663,988,576.80, 995,982,865.20 and 434,665,005.60

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Solution

The fourth proportional to 663,988,576.80, 995,982,865.20 and 434,665,005.60 is: 651,997,508.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,988,576.80 : 995,982,865.20 = 434,665,005.60 : x
  2. Step 2: Convert to fraction form
    663,988,576.80/995,982,865.20 = 434,665,005.60/x
  3. Step 3: Cross multiply
    663,988,576.80x = 995,982,865.20 × 434,665,005.60
  4. Step 4: Simplify right side
    663,988,576.80x = 432,918,897,679,662,080
  5. Step 5: Solve for x
    x = 432,918,897,679,662,080/663,988,576.80
  6. Step 6: Final answer
    x = 651,997,508.40

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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.