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Finding the Fourth Proportional to 615,019.40, 922,658.70 and 259,850.60

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Solution

The fourth proportional to 615,019.40, 922,658.70 and 259,850.60 is: 389,830.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,019.40 : 922,658.70 = 259,850.60 : x
  2. Step 2: Convert to fraction form
    615,019.40/922,658.70 = 259,850.60/x
  3. Step 3: Cross multiply
    615,019.40x = 922,658.70 × 259,850.60
  4. Step 4: Simplify right side
    615,019.40x = 239,753,416,790.22
  5. Step 5: Solve for x
    x = 239,753,416,790.22/615,019.40
  6. Step 6: Final answer
    x = 389,830.66

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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.