Home / 1,278,555.03-1,918,144.80-425,625.03

Finding the Fourth Proportional to 1,278,555.03, 1,918,144.80 and 425,625.03

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Solution

The fourth proportional to 1,278,555.03, 1,918,144.80 and 425,625.03 is: 638,541.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,555.03 : 1,918,144.80 = 425,625.03 : x
  2. Step 2: Convert to fraction form
    1,278,555.03/1,918,144.80 = 425,625.03/x
  3. Step 3: Cross multiply
    1,278,555.03x = 1,918,144.80 × 425,625.03
  4. Step 4: Simplify right side
    1,278,555.03x = 816,410,438,044.34
  5. Step 5: Solve for x
    x = 816,410,438,044.34/1,278,555.03
  6. Step 6: Final answer
    x = 638,541.49

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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.