Home / 640,319.07-883,643.05-349,936.41

Finding the Fourth Proportional to 640,319.07, 883,643.05 and 349,936.41

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Solution

The fourth proportional to 640,319.07, 883,643.05 and 349,936.41 is: 482,913.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,319.07 : 883,643.05 = 349,936.41 : x
  2. Step 2: Convert to fraction form
    640,319.07/883,643.05 = 349,936.41/x
  3. Step 3: Cross multiply
    640,319.07x = 883,643.05 × 349,936.41
  4. Step 4: Simplify right side
    640,319.07x = 309,218,870,470.55
  5. Step 5: Solve for x
    x = 309,218,870,470.55/640,319.07
  6. Step 6: Final answer
    x = 482,913.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.