Home / 873,113.86-1,309,671.14-392,780.62

Finding the Fourth Proportional to 873,113.86, 1,309,671.14 and 392,780.62

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Solution

The fourth proportional to 873,113.86, 1,309,671.14 and 392,780.62 is: 589,171.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,113.86 : 1,309,671.14 = 392,780.62 : x
  2. Step 2: Convert to fraction form
    873,113.86/1,309,671.14 = 392,780.62/x
  3. Step 3: Cross multiply
    873,113.86x = 1,309,671.14 × 392,780.62
  4. Step 4: Simplify right side
    873,113.86x = 514,413,440,401.40
  5. Step 5: Solve for x
    x = 514,413,440,401.40/873,113.86
  6. Step 6: Final answer
    x = 589,171.09

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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.