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Finding the Fourth Proportional to 615,625.70, 923,438.55 and 349,905.20

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Solution

The fourth proportional to 615,625.70, 923,438.55 and 349,905.20 is: 524,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,625.70 : 923,438.55 = 349,905.20 : x
  2. Step 2: Convert to fraction form
    615,625.70/923,438.55 = 349,905.20/x
  3. Step 3: Cross multiply
    615,625.70x = 923,438.55 × 349,905.20
  4. Step 4: Simplify right side
    615,625.70x = 323,115,950,525.46
  5. Step 5: Solve for x
    x = 323,115,950,525.46/615,625.70
  6. Step 6: Final answer
    x = 524,857.80

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Similar ratio
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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.