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Finding the Fourth Proportional to 615,745.58, 923,910.76 and 426,497.18

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Solution

The fourth proportional to 615,745.58, 923,910.76 and 426,497.18 is: 639,948.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,745.58 : 923,910.76 = 426,497.18 : x
  2. Step 2: Convert to fraction form
    615,745.58/923,910.76 = 426,497.18/x
  3. Step 3: Cross multiply
    615,745.58x = 923,910.76 × 426,497.18
  4. Step 4: Simplify right side
    615,745.58x = 394,045,333,711.66
  5. Step 5: Solve for x
    x = 394,045,333,711.66/615,745.58
  6. Step 6: Final answer
    x = 639,948.29

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1.5x scale

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.