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Finding the Fourth Proportional to 911,400.20, 1,366,167.15 and 379,230.20

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Solution

The fourth proportional to 911,400.20, 1,366,167.15 and 379,230.20 is: 568,457.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,400.20 : 1,366,167.15 = 379,230.20 : x
  2. Step 2: Convert to fraction form
    911,400.20/1,366,167.15 = 379,230.20/x
  3. Step 3: Cross multiply
    911,400.20x = 1,366,167.15 × 379,230.20
  4. Step 4: Simplify right side
    911,400.20x = 518,091,834,697.09
  5. Step 5: Solve for x
    x = 518,091,834,697.09/911,400.20
  6. Step 6: Final answer
    x = 568,457.02

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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.