Home / 739,135.80-1,108,379.70-339,643.80

Finding the Fourth Proportional to 739,135.80, 1,108,379.70 and 339,643.80

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Solution

The fourth proportional to 739,135.80, 1,108,379.70 and 339,643.80 is: 509,316.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,135.80 : 1,108,379.70 = 339,643.80 : x
  2. Step 2: Convert to fraction form
    739,135.80/1,108,379.70 = 339,643.80/x
  3. Step 3: Cross multiply
    739,135.80x = 1,108,379.70 × 339,643.80
  4. Step 4: Simplify right side
    739,135.80x = 376,454,293,150.86
  5. Step 5: Solve for x
    x = 376,454,293,150.86/739,135.80
  6. Step 6: Final answer
    x = 509,316.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.