Home / 885,919,207.80-1,328,878,811.70-425,746,414.20

Finding the Fourth Proportional to 885,919,207.80, 1,328,878,811.70 and 425,746,414.20

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Solution

The fourth proportional to 885,919,207.80, 1,328,878,811.70 and 425,746,414.20 is: 638,619,621.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,919,207.80 : 1,328,878,811.70 = 425,746,414.20 : x
  2. Step 2: Convert to fraction form
    885,919,207.80/1,328,878,811.70 = 425,746,414.20/x
  3. Step 3: Cross multiply
    885,919,207.80x = 1,328,878,811.70 × 425,746,414.20
  4. Step 4: Simplify right side
    885,919,207.80x = 565,765,388,987,632,000
  5. Step 5: Solve for x
    x = 565,765,388,987,632,000/885,919,207.80
  6. Step 6: Final answer
    x = 638,619,621.30

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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.