Home / 572,721.71-790,357.80-318,072.89

Finding the Fourth Proportional to 572,721.71, 790,357.80 and 318,072.89

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Solution

The fourth proportional to 572,721.71, 790,357.80 and 318,072.89 is: 438,941.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,721.71 : 790,357.80 = 318,072.89 : x
  2. Step 2: Convert to fraction form
    572,721.71/790,357.80 = 318,072.89/x
  3. Step 3: Cross multiply
    572,721.71x = 790,357.80 × 318,072.89
  4. Step 4: Simplify right side
    572,721.71x = 251,391,387,989.68
  5. Step 5: Solve for x
    x = 251,391,387,989.68/572,721.71
  6. Step 6: Final answer
    x = 438,941.61

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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.