Home / 287,417,789.10-431,120,458.80-80,150,669.37

Finding the Fourth Proportional to 287,417,789.10, 431,120,458.80 and 80,150,669.37

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Solution

The fourth proportional to 287,417,789.10, 431,120,458.80 and 80,150,669.37 is: 120,224,268.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,417,789.10 : 431,120,458.80 = 80,150,669.37 : x
  2. Step 2: Convert to fraction form
    287,417,789.10/431,120,458.80 = 80,150,669.37/x
  3. Step 3: Cross multiply
    287,417,789.10x = 431,120,458.80 × 80,150,669.37
  4. Step 4: Simplify right side
    287,417,789.10x = 34,554,593,351,921,508
  5. Step 5: Solve for x
    x = 34,554,593,351,921,508/287,417,789.10
  6. Step 6: Final answer
    x = 120,224,268.16

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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.