Home / 739,921.05-1,021,093.74-400,389.30

Finding the Fourth Proportional to 739,921.05, 1,021,093.74 and 400,389.30

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Solution

The fourth proportional to 739,921.05, 1,021,093.74 and 400,389.30 is: 552,538.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,921.05 : 1,021,093.74 = 400,389.30 : x
  2. Step 2: Convert to fraction form
    739,921.05/1,021,093.74 = 400,389.30/x
  3. Step 3: Cross multiply
    739,921.05x = 1,021,093.74 × 400,389.30
  4. Step 4: Simplify right side
    739,921.05x = 408,835,007,792.98
  5. Step 5: Solve for x
    x = 408,835,007,792.98/739,921.05
  6. Step 6: Final answer
    x = 552,538.69

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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.