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Finding the Fourth Proportional to 1,276,751.23, 1,761,928.81 and 703,811.90

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Solution

The fourth proportional to 1,276,751.23, 1,761,928.81 and 703,811.90 is: 971,267.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,751.23 : 1,761,928.81 = 703,811.90 : x
  2. Step 2: Convert to fraction form
    1,276,751.23/1,761,928.81 = 703,811.90/x
  3. Step 3: Cross multiply
    1,276,751.23x = 1,761,928.81 × 703,811.90
  4. Step 4: Simplify right side
    1,276,751.23x = 1,240,066,466,076.13
  5. Step 5: Solve for x
    x = 1,240,066,466,076.13/1,276,751.23
  6. Step 6: Final answer
    x = 971,267.10

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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.