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Finding the Fourth Proportional to 620,657.56, 856,508.16 and 352,385.56

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Solution

The fourth proportional to 620,657.56, 856,508.16 and 352,385.56 is: 486,292.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,657.56 : 856,508.16 = 352,385.56 : x
  2. Step 2: Convert to fraction form
    620,657.56/856,508.16 = 352,385.56/x
  3. Step 3: Cross multiply
    620,657.56x = 856,508.16 × 352,385.56
  4. Step 4: Simplify right side
    620,657.56x = 301,821,107,606.17
  5. Step 5: Solve for x
    x = 301,821,107,606.17/620,657.56
  6. Step 6: Final answer
    x = 486,292.49

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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.