Home / 739,117.80-1,108,676.70-319,213.80

Finding the Fourth Proportional to 739,117.80, 1,108,676.70 and 319,213.80

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Solution

The fourth proportional to 739,117.80, 1,108,676.70 and 319,213.80 is: 478,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,117.80 : 1,108,676.70 = 319,213.80 : x
  2. Step 2: Convert to fraction form
    739,117.80/1,108,676.70 = 319,213.80/x
  3. Step 3: Cross multiply
    739,117.80x = 1,108,676.70 × 319,213.80
  4. Step 4: Simplify right side
    739,117.80x = 353,904,902,378.46
  5. Step 5: Solve for x
    x = 353,904,902,378.46/739,117.80
  6. Step 6: Final answer
    x = 478,820.70

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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.