Home / 918,892.42-1,378,338.63-419,906.50

Finding the Fourth Proportional to 918,892.42, 1,378,338.63 and 419,906.50

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Solution

The fourth proportional to 918,892.42, 1,378,338.63 and 419,906.50 is: 629,859.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,892.42 : 1,378,338.63 = 419,906.50 : x
  2. Step 2: Convert to fraction form
    918,892.42/1,378,338.63 = 419,906.50/x
  3. Step 3: Cross multiply
    918,892.42x = 1,378,338.63 × 419,906.50
  4. Step 4: Simplify right side
    918,892.42x = 578,773,349,938.10
  5. Step 5: Solve for x
    x = 578,773,349,938.10/918,892.42
  6. Step 6: Final answer
    x = 629,859.75

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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.