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Finding the Fourth Proportional to 956,645.80, 1,434,968.70 and 919,904.20

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Solution

The fourth proportional to 956,645.80, 1,434,968.70 and 919,904.20 is: 1,379,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    956,645.80 : 1,434,968.70 = 919,904.20 : x
  2. Step 2: Convert to fraction form
    956,645.80/1,434,968.70 = 919,904.20/x
  3. Step 3: Cross multiply
    956,645.80x = 1,434,968.70 × 919,904.20
  4. Step 4: Simplify right side
    956,645.80x = 1,320,033,733,998.54
  5. Step 5: Solve for x
    x = 1,320,033,733,998.54/956,645.80
  6. Step 6: Final answer
    x = 1,379,856.30

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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.