Home / 642,186.24-963,901.44-309,995.52

Finding the Fourth Proportional to 642,186.24, 963,901.44 and 309,995.52

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Solution

The fourth proportional to 642,186.24, 963,901.44 and 309,995.52 is: 465,293.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,186.24 : 963,901.44 = 309,995.52 : x
  2. Step 2: Convert to fraction form
    642,186.24/963,901.44 = 309,995.52/x
  3. Step 3: Cross multiply
    642,186.24x = 963,901.44 × 309,995.52
  4. Step 4: Simplify right side
    642,186.24x = 298,805,128,121.55
  5. Step 5: Solve for x
    x = 298,805,128,121.55/642,186.24
  6. Step 6: Final answer
    x = 465,293.57

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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.