Home / 651,609.12-899,219.38-396,960.32

Finding the Fourth Proportional to 651,609.12, 899,219.38 and 396,960.32

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Solution

The fourth proportional to 651,609.12, 899,219.38 and 396,960.32 is: 547,804.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,609.12 : 899,219.38 = 396,960.32 : x
  2. Step 2: Convert to fraction form
    651,609.12/899,219.38 = 396,960.32/x
  3. Step 3: Cross multiply
    651,609.12x = 899,219.38 × 396,960.32
  4. Step 4: Simplify right side
    651,609.12x = 356,954,412,835.00
  5. Step 5: Solve for x
    x = 356,954,412,835.00/651,609.12
  6. Step 6: Final answer
    x = 547,804.51

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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.