Home / 869,081.56-1,199,328.78-487,108.33

Finding the Fourth Proportional to 869,081.56, 1,199,328.78 and 487,108.33

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Solution

The fourth proportional to 869,081.56, 1,199,328.78 and 487,108.33 is: 672,207.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,081.56 : 1,199,328.78 = 487,108.33 : x
  2. Step 2: Convert to fraction form
    869,081.56/1,199,328.78 = 487,108.33/x
  3. Step 3: Cross multiply
    869,081.56x = 1,199,328.78 × 487,108.33
  4. Step 4: Simplify right side
    869,081.56x = 584,203,039,146.74
  5. Step 5: Solve for x
    x = 584,203,039,146.74/869,081.56
  6. Step 6: Final answer
    x = 672,207.38

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Double scale
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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.