Home / 917,228.94-1,376,087.39-318,189.12

Finding the Fourth Proportional to 917,228.94, 1,376,087.39 and 318,189.12

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Solution

The fourth proportional to 917,228.94, 1,376,087.39 and 318,189.12 is: 477,368.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,228.94 : 1,376,087.39 = 318,189.12 : x
  2. Step 2: Convert to fraction form
    917,228.94/1,376,087.39 = 318,189.12/x
  3. Step 3: Cross multiply
    917,228.94x = 1,376,087.39 × 318,189.12
  4. Step 4: Simplify right side
    917,228.94x = 437,856,035,667.20
  5. Step 5: Solve for x
    x = 437,856,035,667.20/917,228.94
  6. Step 6: Final answer
    x = 477,368.32

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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.