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Finding the Fourth Proportional to 543,401.80, 815,102.70 and 455,484.40

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Solution

The fourth proportional to 543,401.80, 815,102.70 and 455,484.40 is: 683,226.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,401.80 : 815,102.70 = 455,484.40 : x
  2. Step 2: Convert to fraction form
    543,401.80/815,102.70 = 455,484.40/x
  3. Step 3: Cross multiply
    543,401.80x = 815,102.70 × 455,484.40
  4. Step 4: Simplify right side
    543,401.80x = 371,266,564,247.88
  5. Step 5: Solve for x
    x = 371,266,564,247.88/543,401.80
  6. Step 6: Final answer
    x = 683,226.60

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Similar ratio
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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.