Home / 739,109.80-1,108,664.70-319,205.80

Finding the Fourth Proportional to 739,109.80, 1,108,664.70 and 319,205.80

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Solution

The fourth proportional to 739,109.80, 1,108,664.70 and 319,205.80 is: 478,808.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,109.80 : 1,108,664.70 = 319,205.80 : x
  2. Step 2: Convert to fraction form
    739,109.80/1,108,664.70 = 319,205.80/x
  3. Step 3: Cross multiply
    739,109.80x = 1,108,664.70 × 319,205.80
  4. Step 4: Simplify right side
    739,109.80x = 353,892,202,495.26
  5. Step 5: Solve for x
    x = 353,892,202,495.26/739,109.80
  6. Step 6: Final answer
    x = 478,808.70

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Double scale
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Similar ratio
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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.