Home / 812,856.03-1,121,741.15-445,346.21

Finding the Fourth Proportional to 812,856.03, 1,121,741.15 and 445,346.21

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Solution

The fourth proportional to 812,856.03, 1,121,741.15 and 445,346.21 is: 614,577.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,856.03 : 1,121,741.15 = 445,346.21 : x
  2. Step 2: Convert to fraction form
    812,856.03/1,121,741.15 = 445,346.21/x
  3. Step 3: Cross multiply
    812,856.03x = 1,121,741.15 × 445,346.21
  4. Step 4: Simplify right side
    812,856.03x = 499,563,173,671.26
  5. Step 5: Solve for x
    x = 499,563,173,671.26/812,856.03
  6. Step 6: Final answer
    x = 614,577.68

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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.