Home / 812,062.72-1,120,388.92-472,465.36

Finding the Fourth Proportional to 812,062.72, 1,120,388.92 and 472,465.36

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Solution

The fourth proportional to 812,062.72, 1,120,388.92 and 472,465.36 is: 651,852.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,062.72 : 1,120,388.92 = 472,465.36 : x
  2. Step 2: Convert to fraction form
    812,062.72/1,120,388.92 = 472,465.36/x
  3. Step 3: Cross multiply
    812,062.72x = 1,120,388.92 × 472,465.36
  4. Step 4: Simplify right side
    812,062.72x = 529,344,954,427.81
  5. Step 5: Solve for x
    x = 529,344,954,427.81/812,062.72
  6. Step 6: Final answer
    x = 651,852.30

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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.