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Finding the Fourth Proportional to 570,616.08, 787,462.56 and 312,504

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Solution

The fourth proportional to 570,616.08, 787,462.56 and 312,504 is: 431,262.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,616.08 : 787,462.56 = 312,504 : x
  2. Step 2: Convert to fraction form
    570,616.08/787,462.56 = 312,504/x
  3. Step 3: Cross multiply
    570,616.08x = 787,462.56 × 312,504
  4. Step 4: Simplify right side
    570,616.08x = 246,085,199,850.24
  5. Step 5: Solve for x
    x = 246,085,199,850.24/570,616.08
  6. Step 6: Final answer
    x = 431,262.29

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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.