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Finding the Fourth Proportional to 1,424,503.92, 1,965,740.76 and 779,800.68

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Solution

The fourth proportional to 1,424,503.92, 1,965,740.76 and 779,800.68 is: 1,076,084.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424,503.92 : 1,965,740.76 = 779,800.68 : x
  2. Step 2: Convert to fraction form
    1,424,503.92/1,965,740.76 = 779,800.68/x
  3. Step 3: Cross multiply
    1,424,503.92x = 1,965,740.76 × 779,800.68
  4. Step 4: Simplify right side
    1,424,503.92x = 1,532,885,981,351.72
  5. Step 5: Solve for x
    x = 1,532,885,981,351.72/1,424,503.92
  6. Step 6: Final answer
    x = 1,076,084.07

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Why These Related Problems?

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