Home / 787,405.85-1,086,619.78-429,709.85

Finding the Fourth Proportional to 787,405.85, 1,086,619.78 and 429,709.85

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Solution

The fourth proportional to 787,405.85, 1,086,619.78 and 429,709.85 is: 592,999.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,405.85 : 1,086,619.78 = 429,709.85 : x
  2. Step 2: Convert to fraction form
    787,405.85/1,086,619.78 = 429,709.85/x
  3. Step 3: Cross multiply
    787,405.85x = 1,086,619.78 × 429,709.85
  4. Step 4: Simplify right side
    787,405.85x = 466,931,222,670.83
  5. Step 5: Solve for x
    x = 466,931,222,670.83/787,405.85
  6. Step 6: Final answer
    x = 592,999.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.