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Finding the Fourth Proportional to 1,409,746.57, 1,945,454.01 and 765,166.76

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Solution

The fourth proportional to 1,409,746.57, 1,945,454.01 and 765,166.76 is: 1,055,932.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409,746.57 : 1,945,454.01 = 765,166.76 : x
  2. Step 2: Convert to fraction form
    1,409,746.57/1,945,454.01 = 765,166.76/x
  3. Step 3: Cross multiply
    1,409,746.57x = 1,945,454.01 × 765,166.76
  4. Step 4: Simplify right side
    1,409,746.57x = 1,488,596,741,560.71
  5. Step 5: Solve for x
    x = 1,488,596,741,560.71/1,409,746.57
  6. Step 6: Final answer
    x = 1,055,932.16

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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.