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Finding the Fourth Proportional to 572,792.52, 790,431.57 and 318,159.84

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Solution

The fourth proportional to 572,792.52, 790,431.57 and 318,159.84 is: 439,048.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,792.52 : 790,431.57 = 318,159.84 : x
  2. Step 2: Convert to fraction form
    572,792.52/790,431.57 = 318,159.84/x
  3. Step 3: Cross multiply
    572,792.52x = 790,431.57 × 318,159.84
  4. Step 4: Simplify right side
    572,792.52x = 251,483,581,842.15
  5. Step 5: Solve for x
    x = 251,483,581,842.15/572,792.52
  6. Step 6: Final answer
    x = 439,048.30

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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.