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Finding the Fourth Proportional to 647,424.20, 970,905.90 and 292,608.20

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Solution

The fourth proportional to 647,424.20, 970,905.90 and 292,608.20 is: 438,808.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,424.20 : 970,905.90 = 292,608.20 : x
  2. Step 2: Convert to fraction form
    647,424.20/970,905.90 = 292,608.20/x
  3. Step 3: Cross multiply
    647,424.20x = 970,905.90 × 292,608.20
  4. Step 4: Simplify right side
    647,424.20x = 284,095,027,768.38
  5. Step 5: Solve for x
    x = 284,095,027,768.38/647,424.20
  6. Step 6: Final answer
    x = 438,808.17

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1.5x scale

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.