Home / 990,845.68-1,485,888.22-421,866.04

Finding the Fourth Proportional to 990,845.68, 1,485,888.22 and 421,866.04

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Solution

The fourth proportional to 990,845.68, 1,485,888.22 and 421,866.04 is: 632,637.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,845.68 : 1,485,888.22 = 421,866.04 : x
  2. Step 2: Convert to fraction form
    990,845.68/1,485,888.22 = 421,866.04/x
  3. Step 3: Cross multiply
    990,845.68x = 1,485,888.22 × 421,866.04
  4. Step 4: Simplify right side
    990,845.68x = 626,845,779,254.05
  5. Step 5: Solve for x
    x = 626,845,779,254.05/990,845.68
  6. Step 6: Final answer
    x = 632,637.14

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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.