Home / 1,426,015.76-1,967,949.68-781,430.31

Finding the Fourth Proportional to 1,426,015.76, 1,967,949.68 and 781,430.31

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Solution

The fourth proportional to 1,426,015.76, 1,967,949.68 and 781,430.31 is: 1,078,400.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426,015.76 : 1,967,949.68 = 781,430.31 : x
  2. Step 2: Convert to fraction form
    1,426,015.76/1,967,949.68 = 781,430.31/x
  3. Step 3: Cross multiply
    1,426,015.76x = 1,967,949.68 × 781,430.31
  4. Step 4: Simplify right side
    1,426,015.76x = 1,537,815,524,599.65
  5. Step 5: Solve for x
    x = 1,537,815,524,599.65/1,426,015.76
  6. Step 6: Final answer
    x = 1,078,400.09

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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.