Home / 786,631.68-1,085,549.40-447,165.36

Finding the Fourth Proportional to 786,631.68, 1,085,549.40 and 447,165.36

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Solution

The fourth proportional to 786,631.68, 1,085,549.40 and 447,165.36 is: 617,086.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,631.68 : 1,085,549.40 = 447,165.36 : x
  2. Step 2: Convert to fraction form
    786,631.68/1,085,549.40 = 447,165.36/x
  3. Step 3: Cross multiply
    786,631.68x = 1,085,549.40 × 447,165.36
  4. Step 4: Simplify right side
    786,631.68x = 485,420,088,248.78
  5. Step 5: Solve for x
    x = 485,420,088,248.78/786,631.68
  6. Step 6: Final answer
    x = 617,086.88

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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.