Home / 1,108,123.97-1,529,145.17-642,941.81

Finding the Fourth Proportional to 1,108,123.97, 1,529,145.17 and 642,941.81

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Solution

The fourth proportional to 1,108,123.97, 1,529,145.17 and 642,941.81 is: 887,221.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,123.97 : 1,529,145.17 = 642,941.81 : x
  2. Step 2: Convert to fraction form
    1,108,123.97/1,529,145.17 = 642,941.81/x
  3. Step 3: Cross multiply
    1,108,123.97x = 1,529,145.17 × 642,941.81
  4. Step 4: Simplify right side
    1,108,123.97x = 983,151,352,492.12
  5. Step 5: Solve for x
    x = 983,151,352,492.12/1,108,123.97
  6. Step 6: Final answer
    x = 887,221.45

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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.