Home / 1,309,869.40-1,965,840.90-511,533.40

Finding the Fourth Proportional to 1,309,869.40, 1,965,840.90 and 511,533.40

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Solution

The fourth proportional to 1,309,869.40, 1,965,840.90 and 511,533.40 is: 767,704.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,869.40 : 1,965,840.90 = 511,533.40 : x
  2. Step 2: Convert to fraction form
    1,309,869.40/1,965,840.90 = 511,533.40/x
  3. Step 3: Cross multiply
    1,309,869.40x = 1,965,840.90 × 511,533.40
  4. Step 4: Simplify right side
    1,309,869.40x = 1,005,593,279,436.06
  5. Step 5: Solve for x
    x = 1,005,593,279,436.06/1,309,869.40
  6. Step 6: Final answer
    x = 767,704.99

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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.