Home / 826,865.80-1,239,117.90-471,128.20

Finding the Fourth Proportional to 826,865.80, 1,239,117.90 and 471,128.20

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Solution

The fourth proportional to 826,865.80, 1,239,117.90 and 471,128.20 is: 706,019.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,865.80 : 1,239,117.90 = 471,128.20 : x
  2. Step 2: Convert to fraction form
    826,865.80/1,239,117.90 = 471,128.20/x
  3. Step 3: Cross multiply
    826,865.80x = 1,239,117.90 × 471,128.20
  4. Step 4: Simplify right side
    826,865.80x = 583,783,385,814.78
  5. Step 5: Solve for x
    x = 583,783,385,814.78/826,865.80
  6. Step 6: Final answer
    x = 706,019.51

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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.