Home / 738,428.50-1,019,031.33-398,896.75

Finding the Fourth Proportional to 738,428.50, 1,019,031.33 and 398,896.75

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Solution

The fourth proportional to 738,428.50, 1,019,031.33 and 398,896.75 is: 550,477.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,428.50 : 1,019,031.33 = 398,896.75 : x
  2. Step 2: Convert to fraction form
    738,428.50/1,019,031.33 = 398,896.75/x
  3. Step 3: Cross multiply
    738,428.50x = 1,019,031.33 × 398,896.75
  4. Step 4: Simplify right side
    738,428.50x = 406,488,285,685.18
  5. Step 5: Solve for x
    x = 406,488,285,685.18/738,428.50
  6. Step 6: Final answer
    x = 550,477.52

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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.