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Finding the Fourth Proportional to 1,555,616, 2,146,751.52 and 840,224

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Solution

The fourth proportional to 1,555,616, 2,146,751.52 and 840,224 is: 1,159,509.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,616 : 2,146,751.52 = 840,224 : x
  2. Step 2: Convert to fraction form
    1,555,616/2,146,751.52 = 840,224/x
  3. Step 3: Cross multiply
    1,555,616x = 2,146,751.52 × 840,224
  4. Step 4: Simplify right side
    1,555,616x = 1,803,752,149,140.48
  5. Step 5: Solve for x
    x = 1,803,752,149,140.48/1,555,616
  6. Step 6: Final answer
    x = 1,159,509.90

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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.