Home / 805,921.20-1,207,499.40-384,289.20

Finding the Fourth Proportional to 805,921.20, 1,207,499.40 and 384,289.20

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Solution

The fourth proportional to 805,921.20, 1,207,499.40 and 384,289.20 is: 575,774.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,921.20 : 1,207,499.40 = 384,289.20 : x
  2. Step 2: Convert to fraction form
    805,921.20/1,207,499.40 = 384,289.20/x
  3. Step 3: Cross multiply
    805,921.20x = 1,207,499.40 × 384,289.20
  4. Step 4: Simplify right side
    805,921.20x = 464,028,978,426.48
  5. Step 5: Solve for x
    x = 464,028,978,426.48/805,921.20
  6. Step 6: Final answer
    x = 575,774.63

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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.