Home / 811,079.16-1,119,273.42-448,515.96

Finding the Fourth Proportional to 811,079.16, 1,119,273.42 and 448,515.96

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Solution

The fourth proportional to 811,079.16, 1,119,273.42 and 448,515.96 is: 618,943.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,079.16 : 1,119,273.42 = 448,515.96 : x
  2. Step 2: Convert to fraction form
    811,079.16/1,119,273.42 = 448,515.96/x
  3. Step 3: Cross multiply
    811,079.16x = 1,119,273.42 × 448,515.96
  4. Step 4: Simplify right side
    811,079.16x = 502,011,992,473.78
  5. Step 5: Solve for x
    x = 502,011,992,473.78/811,079.16
  6. Step 6: Final answer
    x = 618,943.28

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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.