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Finding the Fourth Proportional to 772,954.80, 1,158,049.80 and 654,068.40

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Solution

The fourth proportional to 772,954.80, 1,158,049.80 and 654,068.40 is: 979,932.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,954.80 : 1,158,049.80 = 654,068.40 : x
  2. Step 2: Convert to fraction form
    772,954.80/1,158,049.80 = 654,068.40/x
  3. Step 3: Cross multiply
    772,954.80x = 1,158,049.80 × 654,068.40
  4. Step 4: Simplify right side
    772,954.80x = 757,443,779,806.32
  5. Step 5: Solve for x
    x = 757,443,779,806.32/772,954.80
  6. Step 6: Final answer
    x = 979,932.82

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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.