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Finding the Fourth Proportional to 1,618,941.72, 2,428,529.94 and 621,669.72

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Solution

The fourth proportional to 1,618,941.72, 2,428,529.94 and 621,669.72 is: 932,549.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618,941.72 : 2,428,529.94 = 621,669.72 : x
  2. Step 2: Convert to fraction form
    1,618,941.72/2,428,529.94 = 621,669.72/x
  3. Step 3: Cross multiply
    1,618,941.72x = 2,428,529.94 × 621,669.72
  4. Step 4: Simplify right side
    1,618,941.72x = 1,509,743,527,811.42
  5. Step 5: Solve for x
    x = 1,509,743,527,811.42/1,618,941.72
  6. Step 6: Final answer
    x = 932,549.65

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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.