Home / 812,057.22-1,120,381.34-472,459.86

Finding the Fourth Proportional to 812,057.22, 1,120,381.34 and 472,459.86

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Solution

The fourth proportional to 812,057.22, 1,120,381.34 and 472,459.86 is: 651,844.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,057.22 : 1,120,381.34 = 472,459.86 : x
  2. Step 2: Convert to fraction form
    812,057.22/1,120,381.34 = 472,459.86/x
  3. Step 3: Cross multiply
    812,057.22x = 1,120,381.34 × 472,459.86
  4. Step 4: Simplify right side
    812,057.22x = 529,335,208,680.71
  5. Step 5: Solve for x
    x = 529,335,208,680.71/812,057.22
  6. Step 6: Final answer
    x = 651,844.72

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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.