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Finding the Fourth Proportional to 615,334.20, 922,482.90 and 319,846.20

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Solution

The fourth proportional to 615,334.20, 922,482.90 and 319,846.20 is: 479,499.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,334.20 : 922,482.90 = 319,846.20 : x
  2. Step 2: Convert to fraction form
    615,334.20/922,482.90 = 319,846.20/x
  3. Step 3: Cross multiply
    615,334.20x = 922,482.90 × 319,846.20
  4. Step 4: Simplify right side
    615,334.20x = 295,052,650,129.98
  5. Step 5: Solve for x
    x = 295,052,650,129.98/615,334.20
  6. Step 6: Final answer
    x = 479,499.84

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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.