Home / 1,008,489.21-1,391,715.10-555,780.21

Finding the Fourth Proportional to 1,008,489.21, 1,391,715.10 and 555,780.21

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Solution

The fourth proportional to 1,008,489.21, 1,391,715.10 and 555,780.21 is: 766,976.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,489.21 : 1,391,715.10 = 555,780.21 : x
  2. Step 2: Convert to fraction form
    1,008,489.21/1,391,715.10 = 555,780.21/x
  3. Step 3: Cross multiply
    1,008,489.21x = 1,391,715.10 × 555,780.21
  4. Step 4: Simplify right side
    1,008,489.21x = 773,487,710,538.17
  5. Step 5: Solve for x
    x = 773,487,710,538.17/1,008,489.21
  6. Step 6: Final answer
    x = 766,976.68

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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.