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Finding the Fourth Proportional to 723,899.08, 998,980.35 and 397,214.24

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Solution

The fourth proportional to 723,899.08, 998,980.35 and 397,214.24 is: 548,155.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,899.08 : 998,980.35 = 397,214.24 : x
  2. Step 2: Convert to fraction form
    723,899.08/998,980.35 = 397,214.24/x
  3. Step 3: Cross multiply
    723,899.08x = 998,980.35 × 397,214.24
  4. Step 4: Simplify right side
    723,899.08x = 396,809,218,514.11
  5. Step 5: Solve for x
    x = 396,809,218,514.11/723,899.08
  6. Step 6: Final answer
    x = 548,155.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.