Home / 1,306,421-1,959,638.11-407,787.41

Finding the Fourth Proportional to 1,306,421, 1,959,638.11 and 407,787.41

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Solution

The fourth proportional to 1,306,421, 1,959,638.11 and 407,787.41 is: 611,683.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306,421 : 1,959,638.11 = 407,787.41 : x
  2. Step 2: Convert to fraction form
    1,306,421/1,959,638.11 = 407,787.41/x
  3. Step 3: Cross multiply
    1,306,421x = 1,959,638.11 × 407,787.41
  4. Step 4: Simplify right side
    1,306,421x = 799,115,737,577.07
  5. Step 5: Solve for x
    x = 799,115,737,577.07/1,306,421
  6. Step 6: Final answer
    x = 611,683.17

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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.