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Finding the Fourth Proportional to 620,286.91, 856,016.58 and 348,402.76

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Solution

The fourth proportional to 620,286.91, 856,016.58 and 348,402.76 is: 480,807.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,286.91 : 856,016.58 = 348,402.76 : x
  2. Step 2: Convert to fraction form
    620,286.91/856,016.58 = 348,402.76/x
  3. Step 3: Cross multiply
    620,286.91x = 856,016.58 × 348,402.76
  4. Step 4: Simplify right side
    620,286.91x = 298,238,539,077.76
  5. Step 5: Solve for x
    x = 298,238,539,077.76/620,286.91
  6. Step 6: Final answer
    x = 480,807.40

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1.5x scale

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.