Home / 1,489,335,172.38-2,055,375,878.57-820,280,084.22

Finding the Fourth Proportional to 1,489,335,172.38, 2,055,375,878.57 and 820,280,084.22

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Solution

The fourth proportional to 1,489,335,172.38, 2,055,375,878.57 and 820,280,084.22 is: 1,132,037,925.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489,335,172.38 : 2,055,375,878.57 = 820,280,084.22 : x
  2. Step 2: Convert to fraction form
    1,489,335,172.38/2,055,375,878.57 = 820,280,084.22/x
  3. Step 3: Cross multiply
    1,489,335,172.38x = 2,055,375,878.57 × 820,280,084.22
  4. Step 4: Simplify right side
    1,489,335,172.38x = 1,685,983,898,773,054,720
  5. Step 5: Solve for x
    x = 1,685,983,898,773,054,720/1,489,335,172.38
  6. Step 6: Final answer
    x = 1,132,037,925.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.