Home / 1,291,898.52-1,782,898.56-718,938.68

Finding the Fourth Proportional to 1,291,898.52, 1,782,898.56 and 718,938.68

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Solution

The fourth proportional to 1,291,898.52, 1,782,898.56 and 718,938.68 is: 992,179.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,898.52 : 1,782,898.56 = 718,938.68 : x
  2. Step 2: Convert to fraction form
    1,291,898.52/1,782,898.56 = 718,938.68/x
  3. Step 3: Cross multiply
    1,291,898.52x = 1,782,898.56 × 718,938.68
  4. Step 4: Simplify right side
    1,291,898.52x = 1,281,794,728,385.81
  5. Step 5: Solve for x
    x = 1,281,794,728,385.81/1,291,898.52
  6. Step 6: Final answer
    x = 992,179.11

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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.