Home / 1,381,840.29-2,071,188.12-840,903.51

Finding the Fourth Proportional to 1,381,840.29, 2,071,188.12 and 840,903.51

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Solution

The fourth proportional to 1,381,840.29, 2,071,188.12 and 840,903.51 is: 1,260,398.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,840.29 : 2,071,188.12 = 840,903.51 : x
  2. Step 2: Convert to fraction form
    1,381,840.29/2,071,188.12 = 840,903.51/x
  3. Step 3: Cross multiply
    1,381,840.29x = 2,071,188.12 × 840,903.51
  4. Step 4: Simplify right side
    1,381,840.29x = 1,741,669,359,978.30
  5. Step 5: Solve for x
    x = 1,741,669,359,978.30/1,381,840.29
  6. Step 6: Final answer
    x = 1,260,398.45

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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.