Home / 663,984,016.80-995,976,025.20-434,660,445.60

Finding the Fourth Proportional to 663,984,016.80, 995,976,025.20 and 434,660,445.60

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Solution

The fourth proportional to 663,984,016.80, 995,976,025.20 and 434,660,445.60 is: 651,990,668.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,984,016.80 : 995,976,025.20 = 434,660,445.60 : x
  2. Step 2: Convert to fraction form
    663,984,016.80/995,976,025.20 = 434,660,445.60/x
  3. Step 3: Cross multiply
    663,984,016.80x = 995,976,025.20 × 434,660,445.60
  4. Step 4: Simplify right side
    663,984,016.80x = 432,911,382,920,348,864
  5. Step 5: Solve for x
    x = 432,911,382,920,348,864/663,984,016.80
  6. Step 6: Final answer
    x = 651,990,668.40

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Double scale
Find fourth proportional to 663,984,017.80, 995,976,026.70 and 434,660,446.60
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.