Home / 515,040.85-772,904.04-211,683.79

Finding the Fourth Proportional to 515,040.85, 772,904.04 and 211,683.79

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Solution

The fourth proportional to 515,040.85, 772,904.04 and 211,683.79 is: 317,666.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,040.85 : 772,904.04 = 211,683.79 : x
  2. Step 2: Convert to fraction form
    515,040.85/772,904.04 = 211,683.79/x
  3. Step 3: Cross multiply
    515,040.85x = 772,904.04 × 211,683.79
  4. Step 4: Simplify right side
    515,040.85x = 163,611,256,493.51
  5. Step 5: Solve for x
    x = 163,611,256,493.51/515,040.85
  6. Step 6: Final answer
    x = 317,666.56

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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.