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Finding the Fourth Proportional to 876,991, 1,210,249.20 and 474,583

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Solution

The fourth proportional to 876,991, 1,210,249.20 and 474,583 is: 654,925.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,991 : 1,210,249.20 = 474,583 : x
  2. Step 2: Convert to fraction form
    876,991/1,210,249.20 = 474,583/x
  3. Step 3: Cross multiply
    876,991x = 1,210,249.20 × 474,583
  4. Step 4: Simplify right side
    876,991x = 574,363,696,083.60
  5. Step 5: Solve for x
    x = 574,363,696,083.60/876,991
  6. Step 6: Final answer
    x = 654,925.42

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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.