Home / 570,590.79-787,439.91-315,942.04

Finding the Fourth Proportional to 570,590.79, 787,439.91 and 315,942.04

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Solution

The fourth proportional to 570,590.79, 787,439.91 and 315,942.04 is: 436,013.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,590.79 : 787,439.91 = 315,942.04 : x
  2. Step 2: Convert to fraction form
    570,590.79/787,439.91 = 315,942.04/x
  3. Step 3: Cross multiply
    570,590.79x = 787,439.91 × 315,942.04
  4. Step 4: Simplify right side
    570,590.79x = 248,785,371,542.82
  5. Step 5: Solve for x
    x = 248,785,371,542.82/570,590.79
  6. Step 6: Final answer
    x = 436,013.65

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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.