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Finding the Fourth Proportional to 876,987, 1,210,243.68 and 474,579

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Solution

The fourth proportional to 876,987, 1,210,243.68 and 474,579 is: 654,919.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,987 : 1,210,243.68 = 474,579 : x
  2. Step 2: Convert to fraction form
    876,987/1,210,243.68 = 474,579/x
  3. Step 3: Cross multiply
    876,987x = 1,210,243.68 × 474,579
  4. Step 4: Simplify right side
    876,987x = 574,356,235,410.72
  5. Step 5: Solve for x
    x = 574,356,235,410.72/876,987
  6. Step 6: Final answer
    x = 654,919.90

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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.