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Finding the Fourth Proportional to 572,731.40, 857,930.70 and 292,406.60

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Solution

The fourth proportional to 572,731.40, 857,930.70 and 292,406.60 is: 438,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,731.40 : 857,930.70 = 292,406.60 : x
  2. Step 2: Convert to fraction form
    572,731.40/857,930.70 = 292,406.60/x
  3. Step 3: Cross multiply
    572,731.40x = 857,930.70 × 292,406.60
  4. Step 4: Simplify right side
    572,731.40x = 250,864,599,022.62
  5. Step 5: Solve for x
    x = 250,864,599,022.62/572,731.40
  6. Step 6: Final answer
    x = 438,014.40

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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.