Home / 579,022.60-868,145.10-309,195.40

Finding the Fourth Proportional to 579,022.60, 868,145.10 and 309,195.40

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Solution

The fourth proportional to 579,022.60, 868,145.10 and 309,195.40 is: 463,585.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,022.60 : 868,145.10 = 309,195.40 : x
  2. Step 2: Convert to fraction form
    579,022.60/868,145.10 = 309,195.40/x
  3. Step 3: Cross multiply
    579,022.60x = 868,145.10 × 309,195.40
  4. Step 4: Simplify right side
    579,022.60x = 268,426,471,452.54
  5. Step 5: Solve for x
    x = 268,426,471,452.54/579,022.60
  6. Step 6: Final answer
    x = 463,585.48

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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.