Home / 425,911,969.32-638,804,015.20-134,741,258.79

Finding the Fourth Proportional to 425,911,969.32, 638,804,015.20 and 134,741,258.79

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Solution

The fourth proportional to 425,911,969.32, 638,804,015.20 and 134,741,258.79 is: 202,091,660.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,911,969.32 : 638,804,015.20 = 134,741,258.79 : x
  2. Step 2: Convert to fraction form
    425,911,969.32/638,804,015.20 = 134,741,258.79/x
  3. Step 3: Cross multiply
    425,911,969.32x = 638,804,015.20 × 134,741,258.79
  4. Step 4: Simplify right side
    425,911,969.32x = 86,073,257,128,154,288
  5. Step 5: Solve for x
    x = 86,073,257,128,154,288/425,911,969.32
  6. Step 6: Final answer
    x = 202,091,660.55

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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.