Home / 719,891.19-1,079,120.61-340,139.16

Finding the Fourth Proportional to 719,891.19, 1,079,120.61 and 340,139.16

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Solution

The fourth proportional to 719,891.19, 1,079,120.61 and 340,139.16 is: 509,870.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,891.19 : 1,079,120.61 = 340,139.16 : x
  2. Step 2: Convert to fraction form
    719,891.19/1,079,120.61 = 340,139.16/x
  3. Step 3: Cross multiply
    719,891.19x = 1,079,120.61 × 340,139.16
  4. Step 4: Simplify right side
    719,891.19x = 367,051,177,824.09
  5. Step 5: Solve for x
    x = 367,051,177,824.09/719,891.19
  6. Step 6: Final answer
    x = 509,870.36

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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.