Home / 643,270.75-887,132.46-401,575.66

Finding the Fourth Proportional to 643,270.75, 887,132.46 and 401,575.66

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Solution

The fourth proportional to 643,270.75, 887,132.46 and 401,575.66 is: 553,811.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,270.75 : 887,132.46 = 401,575.66 : x
  2. Step 2: Convert to fraction form
    643,270.75/887,132.46 = 401,575.66/x
  3. Step 3: Cross multiply
    643,270.75x = 887,132.46 × 401,575.66
  4. Step 4: Simplify right side
    643,270.75x = 356,250,803,131.92
  5. Step 5: Solve for x
    x = 356,250,803,131.92/643,270.75
  6. Step 6: Final answer
    x = 553,811.60

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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.