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Finding the Fourth Proportional to 572,656.20, 790,302.12 and 318,007.38

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Solution

The fourth proportional to 572,656.20, 790,302.12 and 318,007.38 is: 438,870.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,656.20 : 790,302.12 = 318,007.38 : x
  2. Step 2: Convert to fraction form
    572,656.20/790,302.12 = 318,007.38/x
  3. Step 3: Cross multiply
    572,656.20x = 790,302.12 × 318,007.38
  4. Step 4: Simplify right side
    572,656.20x = 251,321,906,589.65
  5. Step 5: Solve for x
    x = 251,321,906,589.65/572,656.20
  6. Step 6: Final answer
    x = 438,870.49

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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.