Home / 873,120.36-1,309,680.90-392,787.12

Finding the Fourth Proportional to 873,120.36, 1,309,680.90 and 392,787.12

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Solution

The fourth proportional to 873,120.36, 1,309,680.90 and 392,787.12 is: 589,180.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,120.36 : 1,309,680.90 = 392,787.12 : x
  2. Step 2: Convert to fraction form
    873,120.36/1,309,680.90 = 392,787.12/x
  3. Step 3: Cross multiply
    873,120.36x = 1,309,680.90 × 392,787.12
  4. Step 4: Simplify right side
    873,120.36x = 514,425,788,830.01
  5. Step 5: Solve for x
    x = 514,425,788,830.01/873,120.36
  6. Step 6: Final answer
    x = 589,180.84

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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.