Home / 908,811.60-1,363,217.40-309,719.40

Finding the Fourth Proportional to 908,811.60, 1,363,217.40 and 309,719.40

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Solution

The fourth proportional to 908,811.60, 1,363,217.40 and 309,719.40 is: 464,579.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,811.60 : 1,363,217.40 = 309,719.40 : x
  2. Step 2: Convert to fraction form
    908,811.60/1,363,217.40 = 309,719.40/x
  3. Step 3: Cross multiply
    908,811.60x = 1,363,217.40 × 309,719.40
  4. Step 4: Simplify right side
    908,811.60x = 422,214,875,197.56
  5. Step 5: Solve for x
    x = 422,214,875,197.56/908,811.60
  6. Step 6: Final answer
    x = 464,579.10

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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.