Home / 687,749.61-949,047.06-381,802.25

Finding the Fourth Proportional to 687,749.61, 949,047.06 and 381,802.25

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Solution

The fourth proportional to 687,749.61, 949,047.06 and 381,802.25 is: 526,860.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,749.61 : 949,047.06 = 381,802.25 : x
  2. Step 2: Convert to fraction form
    687,749.61/949,047.06 = 381,802.25/x
  3. Step 3: Cross multiply
    687,749.61x = 949,047.06 × 381,802.25
  4. Step 4: Simplify right side
    687,749.61x = 362,348,296,773.82
  5. Step 5: Solve for x
    x = 362,348,296,773.82/687,749.61
  6. Step 6: Final answer
    x = 526,860.78

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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.