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Finding the Fourth Proportional to 634,783.90, 875,972.47 and 348,296.86

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Solution

The fourth proportional to 634,783.90, 875,972.47 and 348,296.86 is: 480,633.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,783.90 : 875,972.47 = 348,296.86 : x
  2. Step 2: Convert to fraction form
    634,783.90/875,972.47 = 348,296.86/x
  3. Step 3: Cross multiply
    634,783.90x = 875,972.47 × 348,296.86
  4. Step 4: Simplify right side
    634,783.90x = 305,098,460,747.44
  5. Step 5: Solve for x
    x = 305,098,460,747.44/634,783.90
  6. Step 6: Final answer
    x = 480,633.58

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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.