Home / 919,169.30-1,379,877.15-520,087.70

Finding the Fourth Proportional to 919,169.30, 1,379,877.15 and 520,087.70

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Solution

The fourth proportional to 919,169.30, 1,379,877.15 and 520,087.70 is: 780,767.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,169.30 : 1,379,877.15 = 520,087.70 : x
  2. Step 2: Convert to fraction form
    919,169.30/1,379,877.15 = 520,087.70/x
  3. Step 3: Cross multiply
    919,169.30x = 1,379,877.15 × 520,087.70
  4. Step 4: Simplify right side
    919,169.30x = 717,657,133,226.06
  5. Step 5: Solve for x
    x = 717,657,133,226.06/919,169.30
  6. Step 6: Final answer
    x = 780,767.08

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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.