Home / 553,199,882.80-763,459,356.80-315,055,137.28

Finding the Fourth Proportional to 553,199,882.80, 763,459,356.80 and 315,055,137.28

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Solution

The fourth proportional to 553,199,882.80, 763,459,356.80 and 315,055,137.28 is: 434,800,873.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,199,882.80 : 763,459,356.80 = 315,055,137.28 : x
  2. Step 2: Convert to fraction form
    553,199,882.80/763,459,356.80 = 315,055,137.28/x
  3. Step 3: Cross multiply
    553,199,882.80x = 763,459,356.80 × 315,055,137.28
  4. Step 4: Simplify right side
    553,199,882.80x = 240,531,792,464,324,480
  5. Step 5: Solve for x
    x = 240,531,792,464,324,480/553,199,882.80
  6. Step 6: Final answer
    x = 434,800,873.87

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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.