Home / 851,618.21-1,277,501.09-312,021.05

Finding the Fourth Proportional to 851,618.21, 1,277,501.09 and 312,021.05

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Solution

The fourth proportional to 851,618.21, 1,277,501.09 and 312,021.05 is: 468,058.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,618.21 : 1,277,501.09 = 312,021.05 : x
  2. Step 2: Convert to fraction form
    851,618.21/1,277,501.09 = 312,021.05/x
  3. Step 3: Cross multiply
    851,618.21x = 1,277,501.09 × 312,021.05
  4. Step 4: Simplify right side
    851,618.21x = 398,607,223,530.33
  5. Step 5: Solve for x
    x = 398,607,223,530.33/851,618.21
  6. Step 6: Final answer
    x = 468,058.60

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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.