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Finding the Fourth Proportional to 572,726.16, 790,363.98 and 318,077.37

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Solution

The fourth proportional to 572,726.16, 790,363.98 and 318,077.37 is: 438,947.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,726.16 : 790,363.98 = 318,077.37 : x
  2. Step 2: Convert to fraction form
    572,726.16/790,363.98 = 318,077.37/x
  3. Step 3: Cross multiply
    572,726.16x = 790,363.98 × 318,077.37
  4. Step 4: Simplify right side
    572,726.16x = 251,396,896,101.13
  5. Step 5: Solve for x
    x = 251,396,896,101.13/572,726.16
  6. Step 6: Final answer
    x = 438,947.81

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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.