Home / 431,338,359.93-646,349,102.46-256,116,332.73

Finding the Fourth Proportional to 431,338,359.93, 646,349,102.46 and 256,116,332.73

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Solution

The fourth proportional to 431,338,359.93, 646,349,102.46 and 256,116,332.73 is: 383,783,537.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,338,359.93 : 646,349,102.46 = 256,116,332.73 : x
  2. Step 2: Convert to fraction form
    431,338,359.93/646,349,102.46 = 256,116,332.73/x
  3. Step 3: Cross multiply
    431,338,359.93x = 646,349,102.46 × 256,116,332.73
  4. Step 4: Simplify right side
    431,338,359.93x = 165,540,561,785,382,240
  5. Step 5: Solve for x
    x = 165,540,561,785,382,240/431,338,359.93
  6. Step 6: Final answer
    x = 383,783,537.85

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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.