Home / 917,400.85-1,375,609.20-384,319.60

Finding the Fourth Proportional to 917,400.85, 1,375,609.20 and 384,319.60

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Solution

The fourth proportional to 917,400.85, 1,375,609.20 and 384,319.60 is: 576,273.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,400.85 : 1,375,609.20 = 384,319.60 : x
  2. Step 2: Convert to fraction form
    917,400.85/1,375,609.20 = 384,319.60/x
  3. Step 3: Cross multiply
    917,400.85x = 1,375,609.20 × 384,319.60
  4. Step 4: Simplify right side
    917,400.85x = 528,673,577,500.32
  5. Step 5: Solve for x
    x = 528,673,577,500.32/917,400.85
  6. Step 6: Final answer
    x = 576,273.26

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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.