Home / 1,108,153.17-1,529,185.45-642,971.12

Finding the Fourth Proportional to 1,108,153.17, 1,529,185.45 and 642,971.12

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Solution

The fourth proportional to 1,108,153.17, 1,529,185.45 and 642,971.12 is: 887,261.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,153.17 : 1,529,185.45 = 642,971.12 : x
  2. Step 2: Convert to fraction form
    1,108,153.17/1,529,185.45 = 642,971.12/x
  3. Step 3: Cross multiply
    1,108,153.17x = 1,529,185.45 × 642,971.12
  4. Step 4: Simplify right side
    1,108,153.17x = 983,222,078,259.35
  5. Step 5: Solve for x
    x = 983,222,078,259.35/1,108,153.17
  6. Step 6: Final answer
    x = 887,261.90

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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.