Home / 640,831.88-960,619.05-356,658.57

Finding the Fourth Proportional to 640,831.88, 960,619.05 and 356,658.57

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Solution

The fourth proportional to 640,831.88, 960,619.05 and 356,658.57 is: 534,637.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,831.88 : 960,619.05 = 356,658.57 : x
  2. Step 2: Convert to fraction form
    640,831.88/960,619.05 = 356,658.57/x
  3. Step 3: Cross multiply
    640,831.88x = 960,619.05 × 356,658.57
  4. Step 4: Simplify right side
    640,831.88x = 342,613,016,687.76
  5. Step 5: Solve for x
    x = 342,613,016,687.76/640,831.88
  6. Step 6: Final answer
    x = 534,637.91

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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.