Home / 651,390.57-899,469.59-489,964.41

Finding the Fourth Proportional to 651,390.57, 899,469.59 and 489,964.41

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Solution

The fourth proportional to 651,390.57, 899,469.59 and 489,964.41 is: 676,565.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,390.57 : 899,469.59 = 489,964.41 : x
  2. Step 2: Convert to fraction form
    651,390.57/899,469.59 = 489,964.41/x
  3. Step 3: Cross multiply
    651,390.57x = 899,469.59 × 489,964.41
  4. Step 4: Simplify right side
    651,390.57x = 440,708,084,527.47
  5. Step 5: Solve for x
    x = 440,708,084,527.47/651,390.57
  6. Step 6: Final answer
    x = 676,565.04

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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.