Home / 1,272,719,431.17-1,756,150,450.32-715,694,905.17

Finding the Fourth Proportional to 1,272,719,431.17, 1,756,150,450.32 and 715,694,905.17

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Solution

The fourth proportional to 1,272,719,431.17, 1,756,150,450.32 and 715,694,905.17 is: 987,545,172.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,719,431.17 : 1,756,150,450.32 = 715,694,905.17 : x
  2. Step 2: Convert to fraction form
    1,272,719,431.17/1,756,150,450.32 = 715,694,905.17/x
  3. Step 3: Cross multiply
    1,272,719,431.17x = 1,756,150,450.32 × 715,694,905.17
  4. Step 4: Simplify right side
    1,272,719,431.17x = 1,256,867,930,006,024,960
  5. Step 5: Solve for x
    x = 1,256,867,930,006,024,960/1,272,719,431.17
  6. Step 6: Final answer
    x = 987,545,172.35

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Half scale
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Double scale
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1.5x scale

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.