Home / 718,326-1,077,494.40-318,859.38

Finding the Fourth Proportional to 718,326, 1,077,494.40 and 318,859.38

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Solution

The fourth proportional to 718,326, 1,077,494.40 and 318,859.38 is: 478,291.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,326 : 1,077,494.40 = 318,859.38 : x
  2. Step 2: Convert to fraction form
    718,326/1,077,494.40 = 318,859.38/x
  3. Step 3: Cross multiply
    718,326x = 1,077,494.40 × 318,859.38
  4. Step 4: Simplify right side
    718,326x = 343,569,196,337.47
  5. Step 5: Solve for x
    x = 343,569,196,337.47/718,326
  6. Step 6: Final answer
    x = 478,291.47

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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.