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Finding the Fourth Proportional to 638,019.70, 880,487.14 and 366,137.34

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Solution

The fourth proportional to 638,019.70, 880,487.14 and 366,137.34 is: 505,280.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,019.70 : 880,487.14 = 366,137.34 : x
  2. Step 2: Convert to fraction form
    638,019.70/880,487.14 = 366,137.34/x
  3. Step 3: Cross multiply
    638,019.70x = 880,487.14 × 366,137.34
  4. Step 4: Simplify right side
    638,019.70x = 322,379,219,343.81
  5. Step 5: Solve for x
    x = 322,379,219,343.81/638,019.70
  6. Step 6: Final answer
    x = 505,280.98

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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.