Home / 918,183.60-1,377,275.40-318,945.60

Finding the Fourth Proportional to 918,183.60, 1,377,275.40 and 318,945.60

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Solution

The fourth proportional to 918,183.60, 1,377,275.40 and 318,945.60 is: 478,418.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,183.60 : 1,377,275.40 = 318,945.60 : x
  2. Step 2: Convert to fraction form
    918,183.60/1,377,275.40 = 318,945.60/x
  3. Step 3: Cross multiply
    918,183.60x = 1,377,275.40 × 318,945.60
  4. Step 4: Simplify right side
    918,183.60x = 439,275,928,818.24
  5. Step 5: Solve for x
    x = 439,275,928,818.24/918,183.60
  6. Step 6: Final answer
    x = 478,418.40

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Double scale
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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.