Home / 1,443,528.90-1,991,934.92-862,636.75

Finding the Fourth Proportional to 1,443,528.90, 1,991,934.92 and 862,636.75

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Solution

The fourth proportional to 1,443,528.90, 1,991,934.92 and 862,636.75 is: 1,190,358.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443,528.90 : 1,991,934.92 = 862,636.75 : x
  2. Step 2: Convert to fraction form
    1,443,528.90/1,991,934.92 = 862,636.75/x
  3. Step 3: Cross multiply
    1,443,528.90x = 1,991,934.92 × 862,636.75
  4. Step 4: Simplify right side
    1,443,528.90x = 1,718,316,262,777.06
  5. Step 5: Solve for x
    x = 1,718,316,262,777.06/1,443,528.90
  6. Step 6: Final answer
    x = 1,190,358.06

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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.