Home / 425,862,009.16-638,844,009.72-130,718,469.36

Finding the Fourth Proportional to 425,862,009.16, 638,844,009.72 and 130,718,469.36

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Solution

The fourth proportional to 425,862,009.16, 638,844,009.72 and 130,718,469.36 is: 196,093,357.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,862,009.16 : 638,844,009.72 = 130,718,469.36 : x
  2. Step 2: Convert to fraction form
    425,862,009.16/638,844,009.72 = 130,718,469.36/x
  3. Step 3: Cross multiply
    425,862,009.16x = 638,844,009.72 × 130,718,469.36
  4. Step 4: Simplify right side
    425,862,009.16x = 83,508,711,110,403,360
  5. Step 5: Solve for x
    x = 83,508,711,110,403,360/425,862,009.16
  6. Step 6: Final answer
    x = 196,093,357.27

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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.