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Finding the Fourth Proportional to 634,777.78, 876,008.63 and 348,297.64

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Solution

The fourth proportional to 634,777.78, 876,008.63 and 348,297.64 is: 480,659.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,777.78 : 876,008.63 = 348,297.64 : x
  2. Step 2: Convert to fraction form
    634,777.78/876,008.63 = 348,297.64/x
  3. Step 3: Cross multiply
    634,777.78x = 876,008.63 × 348,297.64
  4. Step 4: Simplify right side
    634,777.78x = 305,111,738,448.63
  5. Step 5: Solve for x
    x = 305,111,738,448.63/634,777.78
  6. Step 6: Final answer
    x = 480,659.13

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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.