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Finding the Fourth Proportional to 666,720.67, 920,074.49 and 360,797.04

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Solution

The fourth proportional to 666,720.67, 920,074.49 and 360,797.04 is: 497,899.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,720.67 : 920,074.49 = 360,797.04 : x
  2. Step 2: Convert to fraction form
    666,720.67/920,074.49 = 360,797.04/x
  3. Step 3: Cross multiply
    666,720.67x = 920,074.49 × 360,797.04
  4. Step 4: Simplify right side
    666,720.67x = 331,960,156,737.71
  5. Step 5: Solve for x
    x = 331,960,156,737.71/666,720.67
  6. Step 6: Final answer
    x = 497,899.90

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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.