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Finding the Fourth Proportional to 620,584.20, 856,407.06 and 348,652.08

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Solution

The fourth proportional to 620,584.20, 856,407.06 and 348,652.08 is: 481,140.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,584.20 : 856,407.06 = 348,652.08 : x
  2. Step 2: Convert to fraction form
    620,584.20/856,407.06 = 348,652.08/x
  3. Step 3: Cross multiply
    620,584.20x = 856,407.06 × 348,652.08
  4. Step 4: Simplify right side
    620,584.20x = 298,588,102,795.69
  5. Step 5: Solve for x
    x = 298,588,102,795.69/620,584.20
  6. Step 6: Final answer
    x = 481,140.36

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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.