Home / 1,278,837.59-1,916,904.83-425,681.60

Finding the Fourth Proportional to 1,278,837.59, 1,916,904.83 and 425,681.60

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Solution

The fourth proportional to 1,278,837.59, 1,916,904.83 and 425,681.60 is: 638,072.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,837.59 : 1,916,904.83 = 425,681.60 : x
  2. Step 2: Convert to fraction form
    1,278,837.59/1,916,904.83 = 425,681.60/x
  3. Step 3: Cross multiply
    1,278,837.59x = 1,916,904.83 × 425,681.60
  4. Step 4: Simplify right side
    1,278,837.59x = 815,991,103,369.20
  5. Step 5: Solve for x
    x = 815,991,103,369.20/1,278,837.59
  6. Step 6: Final answer
    x = 638,072.51

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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.