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Finding the Fourth Proportional to 926,762.80, 1,390,273.80 and 394,279.60

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Solution

The fourth proportional to 926,762.80, 1,390,273.80 and 394,279.60 is: 591,474.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,762.80 : 1,390,273.80 = 394,279.60 : x
  2. Step 2: Convert to fraction form
    926,762.80/1,390,273.80 = 394,279.60/x
  3. Step 3: Cross multiply
    926,762.80x = 1,390,273.80 × 394,279.60
  4. Step 4: Simplify right side
    926,762.80x = 548,156,597,754.48
  5. Step 5: Solve for x
    x = 548,156,597,754.48/926,762.80
  6. Step 6: Final answer
    x = 591,474.54

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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.