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Finding the Fourth Proportional to 638,415.84, 880,930.98 and 366,495.60

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Solution

The fourth proportional to 638,415.84, 880,930.98 and 366,495.60 is: 505,716.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,415.84 : 880,930.98 = 366,495.60 : x
  2. Step 2: Convert to fraction form
    638,415.84/880,930.98 = 366,495.60/x
  3. Step 3: Cross multiply
    638,415.84x = 880,930.98 × 366,495.60
  4. Step 4: Simplify right side
    638,415.84x = 322,857,328,073.69
  5. Step 5: Solve for x
    x = 322,857,328,073.69/638,415.84
  6. Step 6: Final answer
    x = 505,716.35

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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.