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Finding the Fourth Proportional to 411,427.40, 617,141.10 and 341,443.40

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Solution

The fourth proportional to 411,427.40, 617,141.10 and 341,443.40 is: 512,165.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,427.40 : 617,141.10 = 341,443.40 : x
  2. Step 2: Convert to fraction form
    411,427.40/617,141.10 = 341,443.40/x
  3. Step 3: Cross multiply
    411,427.40x = 617,141.10 × 341,443.40
  4. Step 4: Simplify right side
    411,427.40x = 210,718,755,463.74
  5. Step 5: Solve for x
    x = 210,718,755,463.74/411,427.40
  6. Step 6: Final answer
    x = 512,165.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.