Home / 890,311.94-1,228,631.56-482,413.46

Finding the Fourth Proportional to 890,311.94, 1,228,631.56 and 482,413.46

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Solution

The fourth proportional to 890,311.94, 1,228,631.56 and 482,413.46 is: 665,731.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,311.94 : 1,228,631.56 = 482,413.46 : x
  2. Step 2: Convert to fraction form
    890,311.94/1,228,631.56 = 482,413.46/x
  3. Step 3: Cross multiply
    890,311.94x = 1,228,631.56 × 482,413.46
  4. Step 4: Simplify right side
    890,311.94x = 592,708,394,575.61
  5. Step 5: Solve for x
    x = 592,708,394,575.61/890,311.94
  6. Step 6: Final answer
    x = 665,731.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.