Home / 739,427.66-1,020,404.36-399,895.90

Finding the Fourth Proportional to 739,427.66, 1,020,404.36 and 399,895.90

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Solution

The fourth proportional to 739,427.66, 1,020,404.36 and 399,895.90 is: 551,853.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,427.66 : 1,020,404.36 = 399,895.90 : x
  2. Step 2: Convert to fraction form
    739,427.66/1,020,404.36 = 399,895.90/x
  3. Step 3: Cross multiply
    739,427.66x = 1,020,404.36 × 399,895.90
  4. Step 4: Simplify right side
    739,427.66x = 408,055,519,906.12
  5. Step 5: Solve for x
    x = 408,055,519,906.12/739,427.66
  6. Step 6: Final answer
    x = 551,853.20

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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.