Home / 648,111.70-972,167.55-512,809.30

Finding the Fourth Proportional to 648,111.70, 972,167.55 and 512,809.30

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Solution

The fourth proportional to 648,111.70, 972,167.55 and 512,809.30 is: 769,213.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,111.70 : 972,167.55 = 512,809.30 : x
  2. Step 2: Convert to fraction form
    648,111.70/972,167.55 = 512,809.30/x
  3. Step 3: Cross multiply
    648,111.70x = 972,167.55 × 512,809.30
  4. Step 4: Simplify right side
    648,111.70x = 498,536,560,798.22
  5. Step 5: Solve for x
    x = 498,536,560,798.22/648,111.70
  6. Step 6: Final answer
    x = 769,213.95

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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.