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Finding the Fourth Proportional to 1,182,339, 1,631,628 and 645,795

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Solution

The fourth proportional to 1,182,339, 1,631,628 and 645,795 is: 891,197.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182,339 : 1,631,628 = 645,795 : x
  2. Step 2: Convert to fraction form
    1,182,339/1,631,628 = 645,795/x
  3. Step 3: Cross multiply
    1,182,339x = 1,631,628 × 645,795
  4. Step 4: Simplify right side
    1,182,339x = 1,053,697,204,260
  5. Step 5: Solve for x
    x = 1,053,697,204,260/1,182,339
  6. Step 6: Final answer
    x = 891,197.20

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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.