Home / 665,868.40-999,513.38-286,976.12

Finding the Fourth Proportional to 665,868.40, 999,513.38 and 286,976.12

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Solution

The fourth proportional to 665,868.40, 999,513.38 and 286,976.12 is: 430,770.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,868.40 : 999,513.38 = 286,976.12 : x
  2. Step 2: Convert to fraction form
    665,868.40/999,513.38 = 286,976.12/x
  3. Step 3: Cross multiply
    665,868.40x = 999,513.38 × 286,976.12
  4. Step 4: Simplify right side
    665,868.40x = 286,836,471,680.49
  5. Step 5: Solve for x
    x = 286,836,471,680.49/665,868.40
  6. Step 6: Final answer
    x = 430,770.51

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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.