Home / 572,669.20-790,320.06-318,020.38

Finding the Fourth Proportional to 572,669.20, 790,320.06 and 318,020.38

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Solution

The fourth proportional to 572,669.20, 790,320.06 and 318,020.38 is: 438,888.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,669.20 : 790,320.06 = 318,020.38 : x
  2. Step 2: Convert to fraction form
    572,669.20/790,320.06 = 318,020.38/x
  3. Step 3: Cross multiply
    572,669.20x = 790,320.06 × 318,020.38
  4. Step 4: Simplify right side
    572,669.20x = 251,337,885,802.82
  5. Step 5: Solve for x
    x = 251,337,885,802.82/572,669.20
  6. Step 6: Final answer
    x = 438,888.43

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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.