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Finding the Fourth Proportional to 572,713.84, 790,323.36 and 318,081.36

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Solution

The fourth proportional to 572,713.84, 790,323.36 and 318,081.36 is: 438,940.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,713.84 : 790,323.36 = 318,081.36 : x
  2. Step 2: Convert to fraction form
    572,713.84/790,323.36 = 318,081.36/x
  3. Step 3: Cross multiply
    572,713.84x = 790,323.36 × 318,081.36
  4. Step 4: Simplify right side
    572,713.84x = 251,387,129,188.57
  5. Step 5: Solve for x
    x = 251,387,129,188.57/572,713.84
  6. Step 6: Final answer
    x = 438,940.20

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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.