Home / 389,430.20-584,145.30-365,810.60

Finding the Fourth Proportional to 389,430.20, 584,145.30 and 365,810.60

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Solution

The fourth proportional to 389,430.20, 584,145.30 and 365,810.60 is: 548,715.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,430.20 : 584,145.30 = 365,810.60 : x
  2. Step 2: Convert to fraction form
    389,430.20/584,145.30 = 365,810.60/x
  3. Step 3: Cross multiply
    389,430.20x = 584,145.30 × 365,810.60
  4. Step 4: Simplify right side
    389,430.20x = 213,686,542,680.18
  5. Step 5: Solve for x
    x = 213,686,542,680.18/389,430.20
  6. Step 6: Final answer
    x = 548,715.90

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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.