Home / 572,721.39-790,357.37-318,072.58

Finding the Fourth Proportional to 572,721.39, 790,357.37 and 318,072.58

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Solution

The fourth proportional to 572,721.39, 790,357.37 and 318,072.58 is: 438,941.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,721.39 : 790,357.37 = 318,072.58 : x
  2. Step 2: Convert to fraction form
    572,721.39/790,357.37 = 318,072.58/x
  3. Step 3: Cross multiply
    572,721.39x = 790,357.37 × 318,072.58
  4. Step 4: Simplify right side
    572,721.39x = 251,391,004,231.66
  5. Step 5: Solve for x
    x = 251,391,004,231.66/572,721.39
  6. Step 6: Final answer
    x = 438,941.18

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1.5x scale

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.