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Finding the Fourth Proportional to 720,850.32, 1,081,720.18 and 366,118.92

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Solution

The fourth proportional to 720,850.32, 1,081,720.18 and 366,118.92 is: 549,404.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,850.32 : 1,081,720.18 = 366,118.92 : x
  2. Step 2: Convert to fraction form
    720,850.32/1,081,720.18 = 366,118.92/x
  3. Step 3: Cross multiply
    720,850.32x = 1,081,720.18 × 366,118.92
  4. Step 4: Simplify right side
    720,850.32x = 396,038,224,043.81
  5. Step 5: Solve for x
    x = 396,038,224,043.81/720,850.32
  6. Step 6: Final answer
    x = 549,404.24

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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.