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Finding the Fourth Proportional to 522,958.90, 783,401.55 and 285,877.30

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Solution

The fourth proportional to 522,958.90, 783,401.55 and 285,877.30 is: 428,249.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,958.90 : 783,401.55 = 285,877.30 : x
  2. Step 2: Convert to fraction form
    522,958.90/783,401.55 = 285,877.30/x
  3. Step 3: Cross multiply
    522,958.90x = 783,401.55 × 285,877.30
  4. Step 4: Simplify right side
    522,958.90x = 223,956,719,929.82
  5. Step 5: Solve for x
    x = 223,956,719,929.82/522,958.90
  6. Step 6: Final answer
    x = 428,249.18

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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.