Home / 718,326.25-1,077,494.78-318,859.63

Finding the Fourth Proportional to 718,326.25, 1,077,494.78 and 318,859.63

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Solution

The fourth proportional to 718,326.25, 1,077,494.78 and 318,859.63 is: 478,291.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,326.25 : 1,077,494.78 = 318,859.63 : x
  2. Step 2: Convert to fraction form
    718,326.25/1,077,494.78 = 318,859.63/x
  3. Step 3: Cross multiply
    718,326.25x = 1,077,494.78 × 318,859.63
  4. Step 4: Simplify right side
    718,326.25x = 343,569,585,283.43
  5. Step 5: Solve for x
    x = 343,569,585,283.43/718,326.25
  6. Step 6: Final answer
    x = 478,291.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.