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Finding the Fourth Proportional to 780,377.76, 1,169,663.04 and 358,768.80

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Solution

The fourth proportional to 780,377.76, 1,169,663.04 and 358,768.80 is: 537,737.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,377.76 : 1,169,663.04 = 358,768.80 : x
  2. Step 2: Convert to fraction form
    780,377.76/1,169,663.04 = 358,768.80/x
  3. Step 3: Cross multiply
    780,377.76x = 1,169,663.04 × 358,768.80
  4. Step 4: Simplify right side
    780,377.76x = 419,638,605,265.15
  5. Step 5: Solve for x
    x = 419,638,605,265.15/780,377.76
  6. Step 6: Final answer
    x = 537,737.78

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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.