Home / 739,428.66-1,020,405.74-399,896.90

Finding the Fourth Proportional to 739,428.66, 1,020,405.74 and 399,896.90

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Solution

The fourth proportional to 739,428.66, 1,020,405.74 and 399,896.90 is: 551,854.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,428.66 : 1,020,405.74 = 399,896.90 : x
  2. Step 2: Convert to fraction form
    739,428.66/1,020,405.74 = 399,896.90/x
  3. Step 3: Cross multiply
    739,428.66x = 1,020,405.74 × 399,896.90
  4. Step 4: Simplify right side
    739,428.66x = 408,057,092,168.21
  5. Step 5: Solve for x
    x = 408,057,092,168.21/739,428.66
  6. Step 6: Final answer
    x = 551,854.58

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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.