Home / 663,989,416.80-995,984,125.20-434,665,845.60

Finding the Fourth Proportional to 663,989,416.80, 995,984,125.20 and 434,665,845.60

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Solution

The fourth proportional to 663,989,416.80, 995,984,125.20 and 434,665,845.60 is: 651,998,768.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,989,416.80 : 995,984,125.20 = 434,665,845.60 : x
  2. Step 2: Convert to fraction form
    663,989,416.80/995,984,125.20 = 434,665,845.60/x
  3. Step 3: Cross multiply
    663,989,416.80x = 995,984,125.20 × 434,665,845.60
  4. Step 4: Simplify right side
    663,989,416.80x = 432,920,281,984,234,304
  5. Step 5: Solve for x
    x = 432,920,281,984,234,304/663,989,416.80
  6. Step 6: Final answer
    x = 651,998,768.40

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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.