Home / 826,785.72-1,240,355.66-287,058.87

Finding the Fourth Proportional to 826,785.72, 1,240,355.66 and 287,058.87

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Solution

The fourth proportional to 826,785.72, 1,240,355.66 and 287,058.87 is: 430,649.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,785.72 : 1,240,355.66 = 287,058.87 : x
  2. Step 2: Convert to fraction form
    826,785.72/1,240,355.66 = 287,058.87/x
  3. Step 3: Cross multiply
    826,785.72x = 1,240,355.66 × 287,058.87
  4. Step 4: Simplify right side
    826,785.72x = 356,055,094,157.70
  5. Step 5: Solve for x
    x = 356,055,094,157.70/826,785.72
  6. Step 6: Final answer
    x = 430,649.79

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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.