Home / 811,704.76-1,120,056.60-449,080.72

Finding the Fourth Proportional to 811,704.76, 1,120,056.60 and 449,080.72

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Solution

The fourth proportional to 811,704.76, 1,120,056.60 and 449,080.72 is: 619,678.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,704.76 : 1,120,056.60 = 449,080.72 : x
  2. Step 2: Convert to fraction form
    811,704.76/1,120,056.60 = 449,080.72/x
  3. Step 3: Cross multiply
    811,704.76x = 1,120,056.60 × 449,080.72
  4. Step 4: Simplify right side
    811,704.76x = 502,995,824,368.75
  5. Step 5: Solve for x
    x = 502,995,824,368.75/811,704.76
  6. Step 6: Final answer
    x = 619,678.30

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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.