Home / 1,378,774.50-1,902,708.72-775,162.50

Finding the Fourth Proportional to 1,378,774.50, 1,902,708.72 and 775,162.50

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Solution

The fourth proportional to 1,378,774.50, 1,902,708.72 and 775,162.50 is: 1,069,724.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,774.50 : 1,902,708.72 = 775,162.50 : x
  2. Step 2: Convert to fraction form
    1,378,774.50/1,902,708.72 = 775,162.50/x
  3. Step 3: Cross multiply
    1,378,774.50x = 1,902,708.72 × 775,162.50
  4. Step 4: Simplify right side
    1,378,774.50x = 1,474,908,448,167
  5. Step 5: Solve for x
    x = 1,474,908,448,167/1,378,774.50
  6. Step 6: Final answer
    x = 1,069,724.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.