Home / 810,309.50-1,215,336.45-509,870.37

Finding the Fourth Proportional to 810,309.50, 1,215,336.45 and 509,870.37

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Solution

The fourth proportional to 810,309.50, 1,215,336.45 and 509,870.37 is: 764,725.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,309.50 : 1,215,336.45 = 509,870.37 : x
  2. Step 2: Convert to fraction form
    810,309.50/1,215,336.45 = 509,870.37/x
  3. Step 3: Cross multiply
    810,309.50x = 1,215,336.45 × 509,870.37
  4. Step 4: Simplify right side
    810,309.50x = 619,664,051,905.51
  5. Step 5: Solve for x
    x = 619,664,051,905.51/810,309.50
  6. Step 6: Final answer
    x = 764,725.15

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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.