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Finding the Fourth Proportional to 543,505.80, 815,258.70 and 543,505.80

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Solution

The fourth proportional to 543,505.80, 815,258.70 and 543,505.80 is: 815,258.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,505.80 : 815,258.70 = 543,505.80 : x
  2. Step 2: Convert to fraction form
    543,505.80/815,258.70 = 543,505.80/x
  3. Step 3: Cross multiply
    543,505.80x = 815,258.70 × 543,505.80
  4. Step 4: Simplify right side
    543,505.80x = 443,097,831,950.46
  5. Step 5: Solve for x
    x = 443,097,831,950.46/543,505.80
  6. Step 6: Final answer
    x = 815,258.70

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1.5x scale

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.