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Finding the Fourth Proportional to 620,489.59, 856,182.36 and 348,505.36

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Solution

The fourth proportional to 620,489.59, 856,182.36 and 348,505.36 is: 480,885.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,489.59 : 856,182.36 = 348,505.36 : x
  2. Step 2: Convert to fraction form
    620,489.59/856,182.36 = 348,505.36/x
  3. Step 3: Cross multiply
    620,489.59x = 856,182.36 × 348,505.36
  4. Step 4: Simplify right side
    620,489.59x = 298,384,141,597.45
  5. Step 5: Solve for x
    x = 298,384,141,597.45/620,489.59
  6. Step 6: Final answer
    x = 480,885.01

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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.