Home / 811,808.60-1,217,712.90-368,576.60

Finding the Fourth Proportional to 811,808.60, 1,217,712.90 and 368,576.60

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Solution

The fourth proportional to 811,808.60, 1,217,712.90 and 368,576.60 is: 552,864.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,808.60 : 1,217,712.90 = 368,576.60 : x
  2. Step 2: Convert to fraction form
    811,808.60/1,217,712.90 = 368,576.60/x
  3. Step 3: Cross multiply
    811,808.60x = 1,217,712.90 × 368,576.60
  4. Step 4: Simplify right side
    811,808.60x = 448,820,480,458.14
  5. Step 5: Solve for x
    x = 448,820,480,458.14/811,808.60
  6. Step 6: Final answer
    x = 552,864.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.