Home / 1,145,018.70-1,716,398.10-639,821.70

Finding the Fourth Proportional to 1,145,018.70, 1,716,398.10 and 639,821.70

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Solution

The fourth proportional to 1,145,018.70, 1,716,398.10 and 639,821.70 is: 959,101.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,018.70 : 1,716,398.10 = 639,821.70 : x
  2. Step 2: Convert to fraction form
    1,145,018.70/1,716,398.10 = 639,821.70/x
  3. Step 3: Cross multiply
    1,145,018.70x = 1,716,398.10 × 639,821.70
  4. Step 4: Simplify right side
    1,145,018.70x = 1,098,188,750,218.77
  5. Step 5: Solve for x
    x = 1,098,188,750,218.77/1,145,018.70
  6. Step 6: Final answer
    x = 959,101.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.