Home / 470,987.55-649,734.30-279,865.62

Finding the Fourth Proportional to 470,987.55, 649,734.30 and 279,865.62

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Solution

The fourth proportional to 470,987.55, 649,734.30 and 279,865.62 is: 386,078.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,987.55 : 649,734.30 = 279,865.62 : x
  2. Step 2: Convert to fraction form
    470,987.55/649,734.30 = 279,865.62/x
  3. Step 3: Cross multiply
    470,987.55x = 649,734.30 × 279,865.62
  4. Step 4: Simplify right side
    470,987.55x = 181,838,292,704.77
  5. Step 5: Solve for x
    x = 181,838,292,704.77/470,987.55
  6. Step 6: Final answer
    x = 386,078.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.