Home / 1,108,154.78-1,529,187.69-642,972.75

Finding the Fourth Proportional to 1,108,154.78, 1,529,187.69 and 642,972.75

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Solution

The fourth proportional to 1,108,154.78, 1,529,187.69 and 642,972.75 is: 887,264.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,154.78 : 1,529,187.69 = 642,972.75 : x
  2. Step 2: Convert to fraction form
    1,108,154.78/1,529,187.69 = 642,972.75/x
  3. Step 3: Cross multiply
    1,108,154.78x = 1,529,187.69 × 642,972.75
  4. Step 4: Simplify right side
    1,108,154.78x = 983,226,014,305.45
  5. Step 5: Solve for x
    x = 983,226,014,305.45/1,108,154.78
  6. Step 6: Final answer
    x = 887,264.15

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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.