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Finding the Fourth Proportional to 634,513.78, 875,630.28 and 348,036.22

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Solution

The fourth proportional to 634,513.78, 875,630.28 and 348,036.22 is: 480,290.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,513.78 : 875,630.28 = 348,036.22 : x
  2. Step 2: Convert to fraction form
    634,513.78/875,630.28 = 348,036.22/x
  3. Step 3: Cross multiply
    634,513.78x = 875,630.28 × 348,036.22
  4. Step 4: Simplify right side
    634,513.78x = 304,751,052,768.74
  5. Step 5: Solve for x
    x = 304,751,052,768.74/634,513.78
  6. Step 6: Final answer
    x = 480,290.68

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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.