Home / 738,546.78-1,019,195.28-399,015.30

Finding the Fourth Proportional to 738,546.78, 1,019,195.28 and 399,015.30

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Solution

The fourth proportional to 738,546.78, 1,019,195.28 and 399,015.30 is: 550,641.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,546.78 : 1,019,195.28 = 399,015.30 : x
  2. Step 2: Convert to fraction form
    738,546.78/1,019,195.28 = 399,015.30/x
  3. Step 3: Cross multiply
    738,546.78x = 1,019,195.28 × 399,015.30
  4. Step 4: Simplify right side
    738,546.78x = 406,674,510,407.78
  5. Step 5: Solve for x
    x = 406,674,510,407.78/738,546.78
  6. Step 6: Final answer
    x = 550,641.50

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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.