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Finding the Fourth Proportional to 648,071.40, 970,940.70 and 529,098.60

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Solution

The fourth proportional to 648,071.40, 970,940.70 and 529,098.60 is: 792,695.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,071.40 : 970,940.70 = 529,098.60 : x
  2. Step 2: Convert to fraction form
    648,071.40/970,940.70 = 529,098.60/x
  3. Step 3: Cross multiply
    648,071.40x = 970,940.70 × 529,098.60
  4. Step 4: Simplify right side
    648,071.40x = 513,723,365,053.02
  5. Step 5: Solve for x
    x = 513,723,365,053.02/648,071.40
  6. Step 6: Final answer
    x = 792,695.63

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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.