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Finding the Fourth Proportional to 674,985, 1,012,851.10 and 404,448.56

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Solution

The fourth proportional to 674,985, 1,012,851.10 and 404,448.56 is: 606,896.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,985 : 1,012,851.10 = 404,448.56 : x
  2. Step 2: Convert to fraction form
    674,985/1,012,851.10 = 404,448.56/x
  3. Step 3: Cross multiply
    674,985x = 1,012,851.10 × 404,448.56
  4. Step 4: Simplify right side
    674,985x = 409,646,168,889.42
  5. Step 5: Solve for x
    x = 409,646,168,889.42/674,985
  6. Step 6: Final answer
    x = 606,896.70

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Why These Related Problems?

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