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Finding the Fourth Proportional to 615,822.20, 923,603.70 and 260,847.80

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Solution

The fourth proportional to 615,822.20, 923,603.70 and 260,847.80 is: 391,216.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,822.20 : 923,603.70 = 260,847.80 : x
  2. Step 2: Convert to fraction form
    615,822.20/923,603.70 = 260,847.80/x
  3. Step 3: Cross multiply
    615,822.20x = 923,603.70 × 260,847.80
  4. Step 4: Simplify right side
    615,822.20x = 240,919,993,216.86
  5. Step 5: Solve for x
    x = 240,919,993,216.86/615,822.20
  6. Step 6: Final answer
    x = 391,216.80

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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.