Home / 990,837.69-1,485,876.24-421,858.05

Finding the Fourth Proportional to 990,837.69, 1,485,876.24 and 421,858.05

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Solution

The fourth proportional to 990,837.69, 1,485,876.24 and 421,858.05 is: 632,625.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,837.69 : 1,485,876.24 = 421,858.05 : x
  2. Step 2: Convert to fraction form
    990,837.69/1,485,876.24 = 421,858.05/x
  3. Step 3: Cross multiply
    990,837.69x = 1,485,876.24 × 421,858.05
  4. Step 4: Simplify right side
    990,837.69x = 626,828,853,147.73
  5. Step 5: Solve for x
    x = 626,828,853,147.73/990,837.69
  6. Step 6: Final answer
    x = 632,625.16

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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.