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Finding the Fourth Proportional to 638,019.21, 880,486.45 and 366,136.84

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Solution

The fourth proportional to 638,019.21, 880,486.45 and 366,136.84 is: 505,280.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,019.21 : 880,486.45 = 366,136.84 : x
  2. Step 2: Convert to fraction form
    638,019.21/880,486.45 = 366,136.84/x
  3. Step 3: Cross multiply
    638,019.21x = 880,486.45 × 366,136.84
  4. Step 4: Simplify right side
    638,019.21x = 322,378,523,349.26
  5. Step 5: Solve for x
    x = 322,378,523,349.26/638,019.21
  6. Step 6: Final answer
    x = 505,280.28

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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.