Home / 661,261.78-912,551.24-370,937.70

Finding the Fourth Proportional to 661,261.78, 912,551.24 and 370,937.70

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Solution

The fourth proportional to 661,261.78, 912,551.24 and 370,937.70 is: 511,899.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,261.78 : 912,551.24 = 370,937.70 : x
  2. Step 2: Convert to fraction form
    661,261.78/912,551.24 = 370,937.70/x
  3. Step 3: Cross multiply
    661,261.78x = 912,551.24 × 370,937.70
  4. Step 4: Simplify right side
    661,261.78x = 338,499,658,097.75
  5. Step 5: Solve for x
    x = 338,499,658,097.75/661,261.78
  6. Step 6: Final answer
    x = 511,899.63

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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.