Home / 1,420,705.13-2,129,729.10-521,905.55

Finding the Fourth Proportional to 1,420,705.13, 2,129,729.10 and 521,905.55

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Solution

The fourth proportional to 1,420,705.13, 2,129,729.10 and 521,905.55 is: 782,370.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,705.13 : 2,129,729.10 = 521,905.55 : x
  2. Step 2: Convert to fraction form
    1,420,705.13/2,129,729.10 = 521,905.55/x
  3. Step 3: Cross multiply
    1,420,705.13x = 2,129,729.10 × 521,905.55
  4. Step 4: Simplify right side
    1,420,705.13x = 1,111,517,437,286.51
  5. Step 5: Solve for x
    x = 1,111,517,437,286.51/1,420,705.13
  6. Step 6: Final answer
    x = 782,370.26

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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.