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Finding the Fourth Proportional to 634,809.28, 876,034.38 and 348,334.16

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Solution

The fourth proportional to 634,809.28, 876,034.38 and 348,334.16 is: 480,699.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,809.28 : 876,034.38 = 348,334.16 : x
  2. Step 2: Convert to fraction form
    634,809.28/876,034.38 = 348,334.16/x
  3. Step 3: Cross multiply
    634,809.28x = 876,034.38 × 348,334.16
  4. Step 4: Simplify right side
    634,809.28x = 305,152,699,888.42
  5. Step 5: Solve for x
    x = 305,152,699,888.42/634,809.28
  6. Step 6: Final answer
    x = 480,699.81

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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.