Home / 1,319,081.70-1,978,622.55-520,097.70

Finding the Fourth Proportional to 1,319,081.70, 1,978,622.55 and 520,097.70

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Solution

The fourth proportional to 1,319,081.70, 1,978,622.55 and 520,097.70 is: 780,146.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,081.70 : 1,978,622.55 = 520,097.70 : x
  2. Step 2: Convert to fraction form
    1,319,081.70/1,978,622.55 = 520,097.70/x
  3. Step 3: Cross multiply
    1,319,081.70x = 1,978,622.55 × 520,097.70
  4. Step 4: Simplify right side
    1,319,081.70x = 1,029,077,037,423.14
  5. Step 5: Solve for x
    x = 1,029,077,037,423.14/1,319,081.70
  6. Step 6: Final answer
    x = 780,146.55

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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.