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Finding the Fourth Proportional to 888,668.90, 1,333,003.35 and 390,032.90

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Solution

The fourth proportional to 888,668.90, 1,333,003.35 and 390,032.90 is: 585,049.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,668.90 : 1,333,003.35 = 390,032.90 : x
  2. Step 2: Convert to fraction form
    888,668.90/1,333,003.35 = 390,032.90/x
  3. Step 3: Cross multiply
    888,668.90x = 1,333,003.35 × 390,032.90
  4. Step 4: Simplify right side
    888,668.90x = 519,915,162,310.22
  5. Step 5: Solve for x
    x = 519,915,162,310.22/888,668.90
  6. Step 6: Final answer
    x = 585,049.35

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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.