Home / 694,711.20-1,042,066.80-687,338.40

Finding the Fourth Proportional to 694,711.20, 1,042,066.80 and 687,338.40

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Solution

The fourth proportional to 694,711.20, 1,042,066.80 and 687,338.40 is: 1,031,007.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,711.20 : 1,042,066.80 = 687,338.40 : x
  2. Step 2: Convert to fraction form
    694,711.20/1,042,066.80 = 687,338.40/x
  3. Step 3: Cross multiply
    694,711.20x = 1,042,066.80 × 687,338.40
  4. Step 4: Simplify right side
    694,711.20x = 716,252,527,005.12
  5. Step 5: Solve for x
    x = 716,252,527,005.12/694,711.20
  6. Step 6: Final answer
    x = 1,031,007.60

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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.