Home / 643,747.41-888,360.35-357,279.57

Finding the Fourth Proportional to 643,747.41, 888,360.35 and 357,279.57

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Solution

The fourth proportional to 643,747.41, 888,360.35 and 357,279.57 is: 493,039.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,747.41 : 888,360.35 = 357,279.57 : x
  2. Step 2: Convert to fraction form
    643,747.41/888,360.35 = 357,279.57/x
  3. Step 3: Cross multiply
    643,747.41x = 888,360.35 × 357,279.57
  4. Step 4: Simplify right side
    643,747.41x = 317,393,002,066.65
  5. Step 5: Solve for x
    x = 317,393,002,066.65/643,747.41
  6. Step 6: Final answer
    x = 493,039.66

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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.