Home / 287,548,298.60-431,378,435.10-123,785,738.60

Finding the Fourth Proportional to 287,548,298.60, 431,378,435.10 and 123,785,738.60

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Solution

The fourth proportional to 287,548,298.60, 431,378,435.10 and 123,785,738.60 is: 185,702,709.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,548,298.60 : 431,378,435.10 = 123,785,738.60 : x
  2. Step 2: Convert to fraction form
    287,548,298.60/431,378,435.10 = 123,785,738.60/x
  3. Step 3: Cross multiply
    287,548,298.60x = 431,378,435.10 × 123,785,738.60
  4. Step 4: Simplify right side
    287,548,298.60x = 53,398,498,204,965,664
  5. Step 5: Solve for x
    x = 53,398,498,204,965,664/287,548,298.60
  6. Step 6: Final answer
    x = 185,702,709.65

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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.