Home / 1,443,288.62-1,991,743.58-781,000.49

Finding the Fourth Proportional to 1,443,288.62, 1,991,743.58 and 781,000.49

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Solution

The fourth proportional to 1,443,288.62, 1,991,743.58 and 781,000.49 is: 1,077,783.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443,288.62 : 1,991,743.58 = 781,000.49 : x
  2. Step 2: Convert to fraction form
    1,443,288.62/1,991,743.58 = 781,000.49/x
  3. Step 3: Cross multiply
    1,443,288.62x = 1,991,743.58 × 781,000.49
  4. Step 4: Simplify right side
    1,443,288.62x = 1,555,552,711,934.35
  5. Step 5: Solve for x
    x = 1,555,552,711,934.35/1,443,288.62
  6. Step 6: Final answer
    x = 1,077,783.54

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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.