Home / 738,551.28-1,019,201.49-399,019.80

Finding the Fourth Proportional to 738,551.28, 1,019,201.49 and 399,019.80

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Solution

The fourth proportional to 738,551.28, 1,019,201.49 and 399,019.80 is: 550,647.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,551.28 : 1,019,201.49 = 399,019.80 : x
  2. Step 2: Convert to fraction form
    738,551.28/1,019,201.49 = 399,019.80/x
  3. Step 3: Cross multiply
    738,551.28x = 1,019,201.49 × 399,019.80
  4. Step 4: Simplify right side
    738,551.28x = 406,681,574,699.50
  5. Step 5: Solve for x
    x = 406,681,574,699.50/738,551.28
  6. Step 6: Final answer
    x = 550,647.71

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Double scale
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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.