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Finding the Fourth Proportional to 648,188.20, 970,532.70 and 508,220.20

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Solution

The fourth proportional to 648,188.20, 970,532.70 and 508,220.20 is: 760,958.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,188.20 : 970,532.70 = 508,220.20 : x
  2. Step 2: Convert to fraction form
    648,188.20/970,532.70 = 508,220.20/x
  3. Step 3: Cross multiply
    648,188.20x = 970,532.70 × 508,220.20
  4. Step 4: Simplify right side
    648,188.20x = 493,244,322,900.54
  5. Step 5: Solve for x
    x = 493,244,322,900.54/648,188.20
  6. Step 6: Final answer
    x = 760,958.50

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Double scale
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1.5x scale

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.