Home / 810,310.50-1,215,337.95-509,871.37

Finding the Fourth Proportional to 810,310.50, 1,215,337.95 and 509,871.37

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Solution

The fourth proportional to 810,310.50, 1,215,337.95 and 509,871.37 is: 764,726.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,310.50 : 1,215,337.95 = 509,871.37 : x
  2. Step 2: Convert to fraction form
    810,310.50/1,215,337.95 = 509,871.37/x
  3. Step 3: Cross multiply
    810,310.50x = 1,215,337.95 × 509,871.37
  4. Step 4: Simplify right side
    810,310.50x = 619,666,025,579.49
  5. Step 5: Solve for x
    x = 619,666,025,579.49/810,310.50
  6. Step 6: Final answer
    x = 764,726.64

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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.