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Finding the Fourth Proportional to 780,456.84, 1,170,668.84 and 359,732.72

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Solution

The fourth proportional to 780,456.84, 1,170,668.84 and 359,732.72 is: 539,591.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,456.84 : 1,170,668.84 = 359,732.72 : x
  2. Step 2: Convert to fraction form
    780,456.84/1,170,668.84 = 359,732.72/x
  3. Step 3: Cross multiply
    780,456.84x = 1,170,668.84 × 359,732.72
  4. Step 4: Simplify right side
    780,456.84x = 421,127,886,032.45
  5. Step 5: Solve for x
    x = 421,127,886,032.45/780,456.84
  6. Step 6: Final answer
    x = 539,591.51

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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.