Home / 638,669,949.36-881,197,976.04-374,209,850.40

Finding the Fourth Proportional to 638,669,949.36, 881,197,976.04 and 374,209,850.40

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Solution

The fourth proportional to 638,669,949.36, 881,197,976.04 and 374,209,850.40 is: 516,312,006.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,669,949.36 : 881,197,976.04 = 374,209,850.40 : x
  2. Step 2: Convert to fraction form
    638,669,949.36/881,197,976.04 = 374,209,850.40/x
  3. Step 3: Cross multiply
    638,669,949.36x = 881,197,976.04 × 374,209,850.40
  4. Step 4: Simplify right side
    638,669,949.36x = 329,752,962,786,711,168
  5. Step 5: Solve for x
    x = 329,752,962,786,711,168/638,669,949.36
  6. Step 6: Final answer
    x = 516,312,006.10

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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.