Home / 1,421,780.20-2,133,043.91-511,055.08

Finding the Fourth Proportional to 1,421,780.20, 2,133,043.91 and 511,055.08

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Solution

The fourth proportional to 1,421,780.20, 2,133,043.91 and 511,055.08 is: 766,716.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,780.20 : 2,133,043.91 = 511,055.08 : x
  2. Step 2: Convert to fraction form
    1,421,780.20/2,133,043.91 = 511,055.08/x
  3. Step 3: Cross multiply
    1,421,780.20x = 2,133,043.91 × 511,055.08
  4. Step 4: Simplify right side
    1,421,780.20x = 1,090,102,926,068.56
  5. Step 5: Solve for x
    x = 1,090,102,926,068.56/1,421,780.20
  6. Step 6: Final answer
    x = 766,716.91

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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.