Home / 784,570.23-1,079,309.30-687,336.21

Finding the Fourth Proportional to 784,570.23, 1,079,309.30 and 687,336.21

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Solution

The fourth proportional to 784,570.23, 1,079,309.30 and 687,336.21 is: 945,547.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,570.23 : 1,079,309.30 = 687,336.21 : x
  2. Step 2: Convert to fraction form
    784,570.23/1,079,309.30 = 687,336.21/x
  3. Step 3: Cross multiply
    784,570.23x = 1,079,309.30 × 687,336.21
  4. Step 4: Simplify right side
    784,570.23x = 741,848,360,243.07
  5. Step 5: Solve for x
    x = 741,848,360,243.07/784,570.23
  6. Step 6: Final answer
    x = 945,547.42

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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.