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Finding the Fourth Proportional to 570,616.10, 787,440.57 and 315,961.82

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Solution

The fourth proportional to 570,616.10, 787,440.57 and 315,961.82 is: 436,021.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,616.10 : 787,440.57 = 315,961.82 : x
  2. Step 2: Convert to fraction form
    570,616.10/787,440.57 = 315,961.82/x
  3. Step 3: Cross multiply
    570,616.10x = 787,440.57 × 315,961.82
  4. Step 4: Simplify right side
    570,616.10x = 248,801,151,701.84
  5. Step 5: Solve for x
    x = 248,801,151,701.84/570,616.10
  6. Step 6: Final answer
    x = 436,021.97

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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.