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Finding the Fourth Proportional to 585,639.92, 878,459.88 and 142,404.08

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Solution

The fourth proportional to 585,639.92, 878,459.88 and 142,404.08 is: 213,606.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,639.92 : 878,459.88 = 142,404.08 : x
  2. Step 2: Convert to fraction form
    585,639.92/878,459.88 = 142,404.08/x
  3. Step 3: Cross multiply
    585,639.92x = 878,459.88 × 142,404.08
  4. Step 4: Simplify right side
    585,639.92x = 125,096,271,028.31
  5. Step 5: Solve for x
    x = 125,096,271,028.31/585,639.92
  6. Step 6: Final answer
    x = 213,606.12

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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.