Home / 389,898.82-584,032.38-313,584.91

Finding the Fourth Proportional to 389,898.82, 584,032.38 and 313,584.91

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Solution

The fourth proportional to 389,898.82, 584,032.38 and 313,584.91 is: 469,721.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,898.82 : 584,032.38 = 313,584.91 : x
  2. Step 2: Convert to fraction form
    389,898.82/584,032.38 = 313,584.91/x
  3. Step 3: Cross multiply
    389,898.82x = 584,032.38 × 313,584.91
  4. Step 4: Simplify right side
    389,898.82x = 183,143,739,751.46
  5. Step 5: Solve for x
    x = 183,143,739,751.46/389,898.82
  6. Step 6: Final answer
    x = 469,721.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.