Home / 711,999.40-1,067,999.10-687,116.20

Finding the Fourth Proportional to 711,999.40, 1,067,999.10 and 687,116.20

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Solution

The fourth proportional to 711,999.40, 1,067,999.10 and 687,116.20 is: 1,030,674.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,999.40 : 1,067,999.10 = 687,116.20 : x
  2. Step 2: Convert to fraction form
    711,999.40/1,067,999.10 = 687,116.20/x
  3. Step 3: Cross multiply
    711,999.40x = 1,067,999.10 × 687,116.20
  4. Step 4: Simplify right side
    711,999.40x = 733,839,483,195.42
  5. Step 5: Solve for x
    x = 733,839,483,195.42/711,999.40
  6. Step 6: Final answer
    x = 1,030,674.30

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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.