Home / 739,510.20-1,109,783.70-319,087.80

Finding the Fourth Proportional to 739,510.20, 1,109,783.70 and 319,087.80

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Solution

The fourth proportional to 739,510.20, 1,109,783.70 and 319,087.80 is: 478,855.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,510.20 : 1,109,783.70 = 319,087.80 : x
  2. Step 2: Convert to fraction form
    739,510.20/1,109,783.70 = 319,087.80/x
  3. Step 3: Cross multiply
    739,510.20x = 1,109,783.70 × 319,087.80
  4. Step 4: Simplify right side
    739,510.20x = 354,118,439,308.86
  5. Step 5: Solve for x
    x = 354,118,439,308.86/739,510.20
  6. Step 6: Final answer
    x = 478,855.38

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Double scale
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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.