Home / 712,187.03-982,813.37-389,902.55

Finding the Fourth Proportional to 712,187.03, 982,813.37 and 389,902.55

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Solution

The fourth proportional to 712,187.03, 982,813.37 and 389,902.55 is: 538,062.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,187.03 : 982,813.37 = 389,902.55 : x
  2. Step 2: Convert to fraction form
    712,187.03/982,813.37 = 389,902.55/x
  3. Step 3: Cross multiply
    712,187.03x = 982,813.37 × 389,902.55
  4. Step 4: Simplify right side
    712,187.03x = 383,201,432,273.51
  5. Step 5: Solve for x
    x = 383,201,432,273.51/712,187.03
  6. Step 6: Final answer
    x = 538,062.92

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1.5x scale

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.