Home / 1,288,892.85-1,932,847.20-390,035.85

Finding the Fourth Proportional to 1,288,892.85, 1,932,847.20 and 390,035.85

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Solution

The fourth proportional to 1,288,892.85, 1,932,847.20 and 390,035.85 is: 584,904.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,892.85 : 1,932,847.20 = 390,035.85 : x
  2. Step 2: Convert to fraction form
    1,288,892.85/1,932,847.20 = 390,035.85/x
  3. Step 3: Cross multiply
    1,288,892.85x = 1,932,847.20 × 390,035.85
  4. Step 4: Simplify right side
    1,288,892.85x = 753,879,700,572.12
  5. Step 5: Solve for x
    x = 753,879,700,572.12/1,288,892.85
  6. Step 6: Final answer
    x = 584,904.87

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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.