Home / 1,424,991.18-1,966,467.78-780,411.21

Finding the Fourth Proportional to 1,424,991.18, 1,966,467.78 and 780,411.21

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Solution

The fourth proportional to 1,424,991.18, 1,966,467.78 and 780,411.21 is: 1,076,956.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424,991.18 : 1,966,467.78 = 780,411.21 : x
  2. Step 2: Convert to fraction form
    1,424,991.18/1,966,467.78 = 780,411.21/x
  3. Step 3: Cross multiply
    1,424,991.18x = 1,966,467.78 × 780,411.21
  4. Step 4: Simplify right side
    1,424,991.18x = 1,534,653,492,241.56
  5. Step 5: Solve for x
    x = 1,534,653,492,241.56/1,424,991.18
  6. Step 6: Final answer
    x = 1,076,956.48

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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.