Home / 866,207,410.80-1,299,311,116.20-521,833,642.80

Finding the Fourth Proportional to 866,207,410.80, 1,299,311,116.20 and 521,833,642.80

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Solution

The fourth proportional to 866,207,410.80, 1,299,311,116.20 and 521,833,642.80 is: 782,750,464.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,207,410.80 : 1,299,311,116.20 = 521,833,642.80 : x
  2. Step 2: Convert to fraction form
    866,207,410.80/1,299,311,116.20 = 521,833,642.80/x
  3. Step 3: Cross multiply
    866,207,410.80x = 1,299,311,116.20 × 521,833,642.80
  4. Step 4: Simplify right side
    866,207,410.80x = 678,024,252,897,180,160
  5. Step 5: Solve for x
    x = 678,024,252,897,180,160/866,207,410.80
  6. Step 6: Final answer
    x = 782,750,464.20

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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.