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Finding the Fourth Proportional to 586,469.84, 879,791.16 and 212,405.36

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Solution

The fourth proportional to 586,469.84, 879,791.16 and 212,405.36 is: 318,639.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,469.84 : 879,791.16 = 212,405.36 : x
  2. Step 2: Convert to fraction form
    586,469.84/879,791.16 = 212,405.36/x
  3. Step 3: Cross multiply
    586,469.84x = 879,791.16 × 212,405.36
  4. Step 4: Simplify right side
    586,469.84x = 186,872,358,064.62
  5. Step 5: Solve for x
    x = 186,872,358,064.62/586,469.84
  6. Step 6: Final answer
    x = 318,639.33

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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.