Home / 2,639,389.47-3,959,153.40-842,271.21

Finding the Fourth Proportional to 2,639,389.47, 3,959,153.40 and 842,271.21

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Solution

The fourth proportional to 2,639,389.47, 3,959,153.40 and 842,271.21 is: 1,263,428.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639,389.47 : 3,959,153.40 = 842,271.21 : x
  2. Step 2: Convert to fraction form
    2,639,389.47/3,959,153.40 = 842,271.21/x
  3. Step 3: Cross multiply
    2,639,389.47x = 3,959,153.40 × 842,271.21
  4. Step 4: Simplify right side
    2,639,389.47x = 3,334,680,924,793.61
  5. Step 5: Solve for x
    x = 3,334,680,924,793.61/2,639,389.47
  6. Step 6: Final answer
    x = 1,263,428.90

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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.