Home / 1,572,378,721-2,169,876,529.38-867,574,568.68

Finding the Fourth Proportional to 1,572,378,721, 2,169,876,529.38 and 867,574,568.68

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Solution

The fourth proportional to 1,572,378,721, 2,169,876,529.38 and 867,574,568.68 is: 1,197,249,535.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572,378,721 : 2,169,876,529.38 = 867,574,568.68 : x
  2. Step 2: Convert to fraction form
    1,572,378,721/2,169,876,529.38 = 867,574,568.68/x
  3. Step 3: Cross multiply
    1,572,378,721x = 2,169,876,529.38 × 867,574,568.68
  4. Step 4: Simplify right side
    1,572,378,721x = 1,882,529,694,065,708,800
  5. Step 5: Solve for x
    x = 1,882,529,694,065,708,800/1,572,378,721
  6. Step 6: Final answer
    x = 1,197,249,535.96

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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.