Home / 786,885.66-1,085,973.75-447,353.10

Finding the Fourth Proportional to 786,885.66, 1,085,973.75 and 447,353.10

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Solution

The fourth proportional to 786,885.66, 1,085,973.75 and 447,353.10 is: 617,387.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,885.66 : 1,085,973.75 = 447,353.10 : x
  2. Step 2: Convert to fraction form
    786,885.66/1,085,973.75 = 447,353.10/x
  3. Step 3: Cross multiply
    786,885.66x = 1,085,973.75 × 447,353.10
  4. Step 4: Simplify right side
    786,885.66x = 485,813,723,581.13
  5. Step 5: Solve for x
    x = 485,813,723,581.13/786,885.66
  6. Step 6: Final answer
    x = 617,387.95

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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.