Home / 861,438.65-1,188,765.11-479,457.23

Finding the Fourth Proportional to 861,438.65, 1,188,765.11 and 479,457.23

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Solution

The fourth proportional to 861,438.65, 1,188,765.11 and 479,457.23 is: 661,639.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,438.65 : 1,188,765.11 = 479,457.23 : x
  2. Step 2: Convert to fraction form
    861,438.65/1,188,765.11 = 479,457.23/x
  3. Step 3: Cross multiply
    861,438.65x = 1,188,765.11 × 479,457.23
  4. Step 4: Simplify right side
    861,438.65x = 569,962,022,016.06
  5. Step 5: Solve for x
    x = 569,962,022,016.06/861,438.65
  6. Step 6: Final answer
    x = 661,639.72

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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.