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Finding the Fourth Proportional to 671,023.25, 925,706.95 and 398,936.76

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Solution

The fourth proportional to 671,023.25, 925,706.95 and 398,936.76 is: 550,351.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,023.25 : 925,706.95 = 398,936.76 : x
  2. Step 2: Convert to fraction form
    671,023.25/925,706.95 = 398,936.76/x
  3. Step 3: Cross multiply
    671,023.25x = 925,706.95 × 398,936.76
  4. Step 4: Simplify right side
    671,023.25x = 369,298,531,342.48
  5. Step 5: Solve for x
    x = 369,298,531,342.48/671,023.25
  6. Step 6: Final answer
    x = 550,351.32

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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.