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Finding the Fourth Proportional to 648,013.40, 970,853.70 and 529,040.60

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Solution

The fourth proportional to 648,013.40, 970,853.70 and 529,040.60 is: 792,608.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,013.40 : 970,853.70 = 529,040.60 : x
  2. Step 2: Convert to fraction form
    648,013.40/970,853.70 = 529,040.60/x
  3. Step 3: Cross multiply
    648,013.40x = 970,853.70 × 529,040.60
  4. Step 4: Simplify right side
    648,013.40x = 513,621,023,960.22
  5. Step 5: Solve for x
    x = 513,621,023,960.22/648,013.40
  6. Step 6: Final answer
    x = 792,608.65

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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.