Home / 937,146.40-1,405,508.80-431,222.08

Finding the Fourth Proportional to 937,146.40, 1,405,508.80 and 431,222.08

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Solution

The fourth proportional to 937,146.40, 1,405,508.80 and 431,222.08 is: 646,736.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    937,146.40 : 1,405,508.80 = 431,222.08 : x
  2. Step 2: Convert to fraction form
    937,146.40/1,405,508.80 = 431,222.08/x
  3. Step 3: Cross multiply
    937,146.40x = 1,405,508.80 × 431,222.08
  4. Step 4: Simplify right side
    937,146.40x = 606,086,428,194.30
  5. Step 5: Solve for x
    x = 606,086,428,194.30/937,146.40
  6. Step 6: Final answer
    x = 646,736.12

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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.