Home / 859,861.40-1,289,792.10-486,613.40

Finding the Fourth Proportional to 859,861.40, 1,289,792.10 and 486,613.40

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Solution

The fourth proportional to 859,861.40, 1,289,792.10 and 486,613.40 is: 729,920.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,861.40 : 1,289,792.10 = 486,613.40 : x
  2. Step 2: Convert to fraction form
    859,861.40/1,289,792.10 = 486,613.40/x
  3. Step 3: Cross multiply
    859,861.40x = 1,289,792.10 × 486,613.40
  4. Step 4: Simplify right side
    859,861.40x = 627,630,119,074.14
  5. Step 5: Solve for x
    x = 627,630,119,074.14/859,861.40
  6. Step 6: Final answer
    x = 729,920.10

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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.