Home / 918,148.60-1,377,222.90-318,910.60

Finding the Fourth Proportional to 918,148.60, 1,377,222.90 and 318,910.60

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Solution

The fourth proportional to 918,148.60, 1,377,222.90 and 318,910.60 is: 478,365.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,148.60 : 1,377,222.90 = 318,910.60 : x
  2. Step 2: Convert to fraction form
    918,148.60/1,377,222.90 = 318,910.60/x
  3. Step 3: Cross multiply
    918,148.60x = 1,377,222.90 × 318,910.60
  4. Step 4: Simplify right side
    918,148.60x = 439,210,981,372.74
  5. Step 5: Solve for x
    x = 439,210,981,372.74/918,148.60
  6. Step 6: Final answer
    x = 478,365.90

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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.