Home / 811,662.31-1,120,095.30-449,101.45

Finding the Fourth Proportional to 811,662.31, 1,120,095.30 and 449,101.45

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Solution

The fourth proportional to 811,662.31, 1,120,095.30 and 449,101.45 is: 619,760.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,662.31 : 1,120,095.30 = 449,101.45 : x
  2. Step 2: Convert to fraction form
    811,662.31/1,120,095.30 = 449,101.45/x
  3. Step 3: Cross multiply
    811,662.31x = 1,120,095.30 × 449,101.45
  4. Step 4: Simplify right side
    811,662.31x = 503,036,423,368.19
  5. Step 5: Solve for x
    x = 503,036,423,368.19/811,662.31
  6. Step 6: Final answer
    x = 619,760.73

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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.