Home / 1,208,380-1,667,529.12-664,515.22

Finding the Fourth Proportional to 1,208,380, 1,667,529.12 and 664,515.22

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Solution

The fourth proportional to 1,208,380, 1,667,529.12 and 664,515.22 is: 917,011.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,380 : 1,667,529.12 = 664,515.22 : x
  2. Step 2: Convert to fraction form
    1,208,380/1,667,529.12 = 664,515.22/x
  3. Step 3: Cross multiply
    1,208,380x = 1,667,529.12 × 664,515.22
  4. Step 4: Simplify right side
    1,208,380x = 1,108,098,480,033.21
  5. Step 5: Solve for x
    x = 1,108,098,480,033.21/1,208,380
  6. Step 6: Final answer
    x = 917,011.60

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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.