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Finding the Fourth Proportional to 648,015.70, 972,023.55 and 543,039.70

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Solution

The fourth proportional to 648,015.70, 972,023.55 and 543,039.70 is: 814,559.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,015.70 : 972,023.55 = 543,039.70 : x
  2. Step 2: Convert to fraction form
    648,015.70/972,023.55 = 543,039.70/x
  3. Step 3: Cross multiply
    648,015.70x = 972,023.55 × 543,039.70
  4. Step 4: Simplify right side
    648,015.70x = 527,847,376,984.94
  5. Step 5: Solve for x
    x = 527,847,376,984.94/648,015.70
  6. Step 6: Final answer
    x = 814,559.55

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Similar ratio
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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.