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Finding the Fourth Proportional to 556,410.20, 835,490.10 and 320,214.20

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Solution

The fourth proportional to 556,410.20, 835,490.10 and 320,214.20 is: 480,824.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,410.20 : 835,490.10 = 320,214.20 : x
  2. Step 2: Convert to fraction form
    556,410.20/835,490.10 = 320,214.20/x
  3. Step 3: Cross multiply
    556,410.20x = 835,490.10 × 320,214.20
  4. Step 4: Simplify right side
    556,410.20x = 267,535,793,979.42
  5. Step 5: Solve for x
    x = 267,535,793,979.42/556,410.20
  6. Step 6: Final answer
    x = 480,824.75

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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.