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Finding the Fourth Proportional to 642,085.92, 886,485.60 and 412,750.08

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Solution

The fourth proportional to 642,085.92, 886,485.60 and 412,750.08 is: 569,856.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,085.92 : 886,485.60 = 412,750.08 : x
  2. Step 2: Convert to fraction form
    642,085.92/886,485.60 = 412,750.08/x
  3. Step 3: Cross multiply
    642,085.92x = 886,485.60 × 412,750.08
  4. Step 4: Simplify right side
    642,085.92x = 365,897,002,318.85
  5. Step 5: Solve for x
    x = 365,897,002,318.85/642,085.92
  6. Step 6: Final answer
    x = 569,856.76

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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.