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Finding the Fourth Proportional to 648,015.40, 970,856.70 and 529,042.60

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Solution

The fourth proportional to 648,015.40, 970,856.70 and 529,042.60 is: 792,611.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,015.40 : 970,856.70 = 529,042.60 : x
  2. Step 2: Convert to fraction form
    648,015.40/970,856.70 = 529,042.60/x
  3. Step 3: Cross multiply
    648,015.40x = 970,856.70 × 529,042.60
  4. Step 4: Simplify right side
    648,015.40x = 513,624,552,795.42
  5. Step 5: Solve for x
    x = 513,624,552,795.42/648,015.40
  6. Step 6: Final answer
    x = 792,611.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.