Home / 712,230.59-982,878.26-389,940.72

Finding the Fourth Proportional to 712,230.59, 982,878.26 and 389,940.72

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Solution

The fourth proportional to 712,230.59, 982,878.26 and 389,940.72 is: 538,118.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,230.59 : 982,878.26 = 389,940.72 : x
  2. Step 2: Convert to fraction form
    712,230.59/982,878.26 = 389,940.72/x
  3. Step 3: Cross multiply
    712,230.59x = 982,878.26 × 389,940.72
  4. Step 4: Simplify right side
    712,230.59x = 383,264,250,741.25
  5. Step 5: Solve for x
    x = 383,264,250,741.25/712,230.59
  6. Step 6: Final answer
    x = 538,118.21

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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.