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Finding the Fourth Proportional to 1,786,970.90, 2,678,947.90 and 775,330.31

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Solution

The fourth proportional to 1,786,970.90, 2,678,947.90 and 775,330.31 is: 1,162,340.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786,970.90 : 2,678,947.90 = 775,330.31 : x
  2. Step 2: Convert to fraction form
    1,786,970.90/2,678,947.90 = 775,330.31/x
  3. Step 3: Cross multiply
    1,786,970.90x = 2,678,947.90 × 775,330.31
  4. Step 4: Simplify right side
    1,786,970.90x = 2,077,069,510,539.89
  5. Step 5: Solve for x
    x = 2,077,069,510,539.89/1,786,970.90
  6. Step 6: Final answer
    x = 1,162,340.98

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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.