Home / 638,396,792.40-880,987,175.46-345,041,360.40

Finding the Fourth Proportional to 638,396,792.40, 880,987,175.46 and 345,041,360.40

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Solution

The fourth proportional to 638,396,792.40, 880,987,175.46 and 345,041,360.40 is: 476,156,862.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,396,792.40 : 880,987,175.46 = 345,041,360.40 : x
  2. Step 2: Convert to fraction form
    638,396,792.40/880,987,175.46 = 345,041,360.40/x
  3. Step 3: Cross multiply
    638,396,792.40x = 880,987,175.46 × 345,041,360.40
  4. Step 4: Simplify right side
    638,396,792.40x = 303,977,013,515,671,872
  5. Step 5: Solve for x
    x = 303,977,013,515,671,872/638,396,792.40
  6. Step 6: Final answer
    x = 476,156,862.21

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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.