Home / 1,278,155,101.10-1,915,909,954.05-694,656,502.70

Finding the Fourth Proportional to 1,278,155,101.10, 1,915,909,954.05 and 694,656,502.70

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Solution

The fourth proportional to 1,278,155,101.10, 1,915,909,954.05 and 694,656,502.70 is: 1,041,265,889.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,155,101.10 : 1,915,909,954.05 = 694,656,502.70 : x
  2. Step 2: Convert to fraction form
    1,278,155,101.10/1,915,909,954.05 = 694,656,502.70/x
  3. Step 3: Cross multiply
    1,278,155,101.10x = 1,915,909,954.05 × 694,656,502.70
  4. Step 4: Simplify right side
    1,278,155,101.10x = 1,330,899,308,168,490,752
  5. Step 5: Solve for x
    x = 1,330,899,308,168,490,752/1,278,155,101.10
  6. Step 6: Final answer
    x = 1,041,265,889.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.