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Finding the Fourth Proportional to 613,346.10, 920,565.90 and 360,310.20

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Solution

The fourth proportional to 613,346.10, 920,565.90 and 360,310.20 is: 540,786.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,346.10 : 920,565.90 = 360,310.20 : x
  2. Step 2: Convert to fraction form
    613,346.10/920,565.90 = 360,310.20/x
  3. Step 3: Cross multiply
    613,346.10x = 920,565.90 × 360,310.20
  4. Step 4: Simplify right side
    613,346.10x = 331,689,283,542.18
  5. Step 5: Solve for x
    x = 331,689,283,542.18/613,346.10
  6. Step 6: Final answer
    x = 540,786.49

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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.