Home / 919,939.70-1,379,909.55-559,133.30

Finding the Fourth Proportional to 919,939.70, 1,379,909.55 and 559,133.30

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Solution

The fourth proportional to 919,939.70, 1,379,909.55 and 559,133.30 is: 838,699.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,939.70 : 1,379,909.55 = 559,133.30 : x
  2. Step 2: Convert to fraction form
    919,939.70/1,379,909.55 = 559,133.30/x
  3. Step 3: Cross multiply
    919,939.70x = 1,379,909.55 × 559,133.30
  4. Step 4: Simplify right side
    919,939.70x = 771,553,380,393.02
  5. Step 5: Solve for x
    x = 771,553,380,393.02/919,939.70
  6. Step 6: Final answer
    x = 838,699.95

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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.