Home / 918,212.60-1,377,318.90-318,974.60

Finding the Fourth Proportional to 918,212.60, 1,377,318.90 and 318,974.60

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Solution

The fourth proportional to 918,212.60, 1,377,318.90 and 318,974.60 is: 478,461.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,212.60 : 1,377,318.90 = 318,974.60 : x
  2. Step 2: Convert to fraction form
    918,212.60/1,377,318.90 = 318,974.60/x
  3. Step 3: Cross multiply
    918,212.60x = 1,377,318.90 × 318,974.60
  4. Step 4: Simplify right side
    918,212.60x = 439,329,745,199.94
  5. Step 5: Solve for x
    x = 439,329,745,199.94/918,212.60
  6. Step 6: Final answer
    x = 478,461.90

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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.