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Finding the Fourth Proportional to 575,640.24, 794,385.42 and 321,007.84

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Solution

The fourth proportional to 575,640.24, 794,385.42 and 321,007.84 is: 442,991.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,640.24 : 794,385.42 = 321,007.84 : x
  2. Step 2: Convert to fraction form
    575,640.24/794,385.42 = 321,007.84/x
  3. Step 3: Cross multiply
    575,640.24x = 794,385.42 × 321,007.84
  4. Step 4: Simplify right side
    575,640.24x = 255,003,947,801.69
  5. Step 5: Solve for x
    x = 255,003,947,801.69/575,640.24
  6. Step 6: Final answer
    x = 442,991.87

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1.5x scale

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.