Home / 738,528.28-1,019,167.74-398,995.48

Finding the Fourth Proportional to 738,528.28, 1,019,167.74 and 398,995.48

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Solution

The fourth proportional to 738,528.28, 1,019,167.74 and 398,995.48 is: 550,613.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,528.28 : 1,019,167.74 = 398,995.48 : x
  2. Step 2: Convert to fraction form
    738,528.28/1,019,167.74 = 398,995.48/x
  3. Step 3: Cross multiply
    738,528.28x = 1,019,167.74 × 398,995.48
  4. Step 4: Simplify right side
    738,528.28x = 406,643,321,621.82
  5. Step 5: Solve for x
    x = 406,643,321,621.82/738,528.28
  6. Step 6: Final answer
    x = 550,613.07

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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.