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Finding the Fourth Proportional to 557,577.48, 769,495 and 315,862.04

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Solution

The fourth proportional to 557,577.48, 769,495 and 315,862.04 is: 435,911.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,577.48 : 769,495 = 315,862.04 : x
  2. Step 2: Convert to fraction form
    557,577.48/769,495 = 315,862.04/x
  3. Step 3: Cross multiply
    557,577.48x = 769,495 × 315,862.04
  4. Step 4: Simplify right side
    557,577.48x = 243,054,260,469.80
  5. Step 5: Solve for x
    x = 243,054,260,469.80/557,577.48
  6. Step 6: Final answer
    x = 435,911.19

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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.