Home / 1,398,387,079.20-2,097,580,618.80-490,647,943.20

Finding the Fourth Proportional to 1,398,387,079.20, 2,097,580,618.80 and 490,647,943.20

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Solution

The fourth proportional to 1,398,387,079.20, 2,097,580,618.80 and 490,647,943.20 is: 735,971,914.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,387,079.20 : 2,097,580,618.80 = 490,647,943.20 : x
  2. Step 2: Convert to fraction form
    1,398,387,079.20/2,097,580,618.80 = 490,647,943.20/x
  3. Step 3: Cross multiply
    1,398,387,079.20x = 2,097,580,618.80 × 490,647,943.20
  4. Step 4: Simplify right side
    1,398,387,079.20x = 1,029,173,616,310,403,200
  5. Step 5: Solve for x
    x = 1,029,173,616,310,403,200/1,398,387,079.20
  6. Step 6: Final answer
    x = 735,971,914.80

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Double scale
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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.