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Finding the Fourth Proportional to 1,424,492.92, 1,965,725.58 and 779,789.62

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Solution

The fourth proportional to 1,424,492.92, 1,965,725.58 and 779,789.62 is: 1,076,068.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424,492.92 : 1,965,725.58 = 779,789.62 : x
  2. Step 2: Convert to fraction form
    1,424,492.92/1,965,725.58 = 779,789.62/x
  3. Step 3: Cross multiply
    1,424,492.92x = 1,965,725.58 × 779,789.62
  4. Step 4: Simplify right side
    1,424,492.92x = 1,532,852,403,052.48
  5. Step 5: Solve for x
    x = 1,532,852,403,052.48/1,424,492.92
  6. Step 6: Final answer
    x = 1,076,068.81

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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.