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Finding the Fourth Proportional to 634,820.76, 876,022.56 and 348,334.56

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Solution

The fourth proportional to 634,820.76, 876,022.56 and 348,334.56 is: 480,685.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,820.76 : 876,022.56 = 348,334.56 : x
  2. Step 2: Convert to fraction form
    634,820.76/876,022.56 = 348,334.56/x
  3. Step 3: Cross multiply
    634,820.76x = 876,022.56 × 348,334.56
  4. Step 4: Simplify right side
    634,820.76x = 305,148,932,987.67
  5. Step 5: Solve for x
    x = 305,148,932,987.67/634,820.76
  6. Step 6: Final answer
    x = 480,685.18

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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.