Home / 990,059.25-1,485,713.63-421,439.49

Finding the Fourth Proportional to 990,059.25, 1,485,713.63 and 421,439.49

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Solution

The fourth proportional to 990,059.25, 1,485,713.63 and 421,439.49 is: 632,425.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,059.25 : 1,485,713.63 = 421,439.49 : x
  2. Step 2: Convert to fraction form
    990,059.25/1,485,713.63 = 421,439.49/x
  3. Step 3: Cross multiply
    990,059.25x = 1,485,713.63 × 421,439.49
  4. Step 4: Simplify right side
    990,059.25x = 626,138,394,513.25
  5. Step 5: Solve for x
    x = 626,138,394,513.25/990,059.25
  6. Step 6: Final answer
    x = 632,425.18

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1.5x scale

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.