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Finding the Fourth Proportional to 809,797.84, 1,117,587.12 and 465,745.16

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Solution

The fourth proportional to 809,797.84, 1,117,587.12 and 465,745.16 is: 642,766.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,797.84 : 1,117,587.12 = 465,745.16 : x
  2. Step 2: Convert to fraction form
    809,797.84/1,117,587.12 = 465,745.16/x
  3. Step 3: Cross multiply
    809,797.84x = 1,117,587.12 × 465,745.16
  4. Step 4: Simplify right side
    809,797.84x = 520,510,792,018.34
  5. Step 5: Solve for x
    x = 520,510,792,018.34/809,797.84
  6. Step 6: Final answer
    x = 642,766.34

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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.