Home / 640,944.56-884,426.92-354,425.69

Finding the Fourth Proportional to 640,944.56, 884,426.92 and 354,425.69

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Solution

The fourth proportional to 640,944.56, 884,426.92 and 354,425.69 is: 489,065.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,944.56 : 884,426.92 = 354,425.69 : x
  2. Step 2: Convert to fraction form
    640,944.56/884,426.92 = 354,425.69/x
  3. Step 3: Cross multiply
    640,944.56x = 884,426.92 × 354,425.69
  4. Step 4: Simplify right side
    640,944.56x = 313,463,622,700.58
  5. Step 5: Solve for x
    x = 313,463,622,700.58/640,944.56
  6. Step 6: Final answer
    x = 489,065.11

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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.