Home / 873,120.88-1,309,681.68-392,787.63

Finding the Fourth Proportional to 873,120.88, 1,309,681.68 and 392,787.63

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Solution

The fourth proportional to 873,120.88, 1,309,681.68 and 392,787.63 is: 589,181.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,120.88 : 1,309,681.68 = 392,787.63 : x
  2. Step 2: Convert to fraction form
    873,120.88/1,309,681.68 = 392,787.63/x
  3. Step 3: Cross multiply
    873,120.88x = 1,309,681.68 × 392,787.63
  4. Step 4: Simplify right side
    873,120.88x = 514,426,763,141.62
  5. Step 5: Solve for x
    x = 514,426,763,141.62/873,120.88
  6. Step 6: Final answer
    x = 589,181.61

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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.