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Finding the Fourth Proportional to 402,480.15, 603,720.23 and 402,480.15

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Solution

The fourth proportional to 402,480.15, 603,720.23 and 402,480.15 is: 603,720.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,480.15 : 603,720.23 = 402,480.15 : x
  2. Step 2: Convert to fraction form
    402,480.15/603,720.23 = 402,480.15/x
  3. Step 3: Cross multiply
    402,480.15x = 603,720.23 × 402,480.15
  4. Step 4: Simplify right side
    402,480.15x = 242,985,406,716.03
  5. Step 5: Solve for x
    x = 242,985,406,716.03/402,480.15
  6. Step 6: Final answer
    x = 603,720.23

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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.