Home / 389,984.10-584,976.15-109,464.90

Finding the Fourth Proportional to 389,984.10, 584,976.15 and 109,464.90

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Solution

The fourth proportional to 389,984.10, 584,976.15 and 109,464.90 is: 164,197.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,984.10 : 584,976.15 = 109,464.90 : x
  2. Step 2: Convert to fraction form
    389,984.10/584,976.15 = 109,464.90/x
  3. Step 3: Cross multiply
    389,984.10x = 584,976.15 × 109,464.90
  4. Step 4: Simplify right side
    389,984.10x = 64,034,355,762.14
  5. Step 5: Solve for x
    x = 64,034,355,762.14/389,984.10
  6. Step 6: Final answer
    x = 164,197.35

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Double scale
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Similar ratio
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1.5x scale

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.