Home / 812,500.21-1,218,747.34-243,878.86

Finding the Fourth Proportional to 812,500.21, 1,218,747.34 and 243,878.86

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Solution

The fourth proportional to 812,500.21, 1,218,747.34 and 243,878.86 is: 365,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,500.21 : 1,218,747.34 = 243,878.86 : x
  2. Step 2: Convert to fraction form
    812,500.21/1,218,747.34 = 243,878.86/x
  3. Step 3: Cross multiply
    812,500.21x = 1,218,747.34 × 243,878.86
  4. Step 4: Simplify right side
    812,500.21x = 297,226,711,907.23
  5. Step 5: Solve for x
    x = 297,226,711,907.23/812,500.21
  6. Step 6: Final answer
    x = 365,817.40

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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.