Home / 811,808.61-1,120,279.11-449,232.23

Finding the Fourth Proportional to 811,808.61, 1,120,279.11 and 449,232.23

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Solution

The fourth proportional to 811,808.61, 1,120,279.11 and 449,232.23 is: 619,931.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,808.61 : 1,120,279.11 = 449,232.23 : x
  2. Step 2: Convert to fraction form
    811,808.61/1,120,279.11 = 449,232.23/x
  3. Step 3: Cross multiply
    811,808.61x = 1,120,279.11 × 449,232.23
  4. Step 4: Simplify right side
    811,808.61x = 503,265,477,206.32
  5. Step 5: Solve for x
    x = 503,265,477,206.32/811,808.61
  6. Step 6: Final answer
    x = 619,931.19

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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.