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Finding the Fourth Proportional to 911,496.40, 1,366,369.80 and 708,980.20

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Solution

The fourth proportional to 911,496.40, 1,366,369.80 and 708,980.20 is: 1,062,789.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,496.40 : 1,366,369.80 = 708,980.20 : x
  2. Step 2: Convert to fraction form
    911,496.40/1,366,369.80 = 708,980.20/x
  3. Step 3: Cross multiply
    911,496.40x = 1,366,369.80 × 708,980.20
  4. Step 4: Simplify right side
    911,496.40x = 968,729,134,077.96
  5. Step 5: Solve for x
    x = 968,729,134,077.96/911,496.40
  6. Step 6: Final answer
    x = 1,062,789.86

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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.