Home / 287,788,512.30-431,682,768.45-268,514,918.70

Finding the Fourth Proportional to 287,788,512.30, 431,682,768.45 and 268,514,918.70

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Solution

The fourth proportional to 287,788,512.30, 431,682,768.45 and 268,514,918.70 is: 402,772,378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,788,512.30 : 431,682,768.45 = 268,514,918.70 : x
  2. Step 2: Convert to fraction form
    287,788,512.30/431,682,768.45 = 268,514,918.70/x
  3. Step 3: Cross multiply
    287,788,512.30x = 431,682,768.45 × 268,514,918.70
  4. Step 4: Simplify right side
    287,788,512.30x = 115,913,263,474,542,672
  5. Step 5: Solve for x
    x = 115,913,263,474,542,672/287,788,512.30
  6. Step 6: Final answer
    x = 402,772,378.05

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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.