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Finding the Fourth Proportional to 987,693.28, 1,362,946.08 and 579,811.84

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Solution

The fourth proportional to 987,693.28, 1,362,946.08 and 579,811.84 is: 800,098.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,693.28 : 1,362,946.08 = 579,811.84 : x
  2. Step 2: Convert to fraction form
    987,693.28/1,362,946.08 = 579,811.84/x
  3. Step 3: Cross multiply
    987,693.28x = 1,362,946.08 × 579,811.84
  4. Step 4: Simplify right side
    987,693.28x = 790,252,274,465.59
  5. Step 5: Solve for x
    x = 790,252,274,465.59/987,693.28
  6. Step 6: Final answer
    x = 800,098.87

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.