Home / 811,532.80-1,215,695.40-711,805.60

Finding the Fourth Proportional to 811,532.80, 1,215,695.40 and 711,805.60

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Solution

The fourth proportional to 811,532.80, 1,215,695.40 and 711,805.60 is: 1,066,301.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,532.80 : 1,215,695.40 = 711,805.60 : x
  2. Step 2: Convert to fraction form
    811,532.80/1,215,695.40 = 711,805.60/x
  3. Step 3: Cross multiply
    811,532.80x = 1,215,695.40 × 711,805.60
  4. Step 4: Simplify right side
    811,532.80x = 865,338,793,614.24
  5. Step 5: Solve for x
    x = 865,338,793,614.24/811,532.80
  6. Step 6: Final answer
    x = 1,066,301.69

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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.