Home / 479,242.12-661,235.25-315,880.52

Finding the Fourth Proportional to 479,242.12, 661,235.25 and 315,880.52

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Solution

The fourth proportional to 479,242.12, 661,235.25 and 315,880.52 is: 435,836.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,242.12 : 661,235.25 = 315,880.52 : x
  2. Step 2: Convert to fraction form
    479,242.12/661,235.25 = 315,880.52/x
  3. Step 3: Cross multiply
    479,242.12x = 661,235.25 × 315,880.52
  4. Step 4: Simplify right side
    479,242.12x = 208,871,334,612.33
  5. Step 5: Solve for x
    x = 208,871,334,612.33/479,242.12
  6. Step 6: Final answer
    x = 435,836.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.