Home / 858,861.90-1,285,668.45-669,905.10

Finding the Fourth Proportional to 858,861.90, 1,285,668.45 and 669,905.10

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Solution

The fourth proportional to 858,861.90, 1,285,668.45 and 669,905.10 is: 1,002,810.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,861.90 : 1,285,668.45 = 669,905.10 : x
  2. Step 2: Convert to fraction form
    858,861.90/1,285,668.45 = 669,905.10/x
  3. Step 3: Cross multiply
    858,861.90x = 1,285,668.45 × 669,905.10
  4. Step 4: Simplify right side
    858,861.90x = 861,275,851,564.10
  5. Step 5: Solve for x
    x = 861,275,851,564.10/858,861.90
  6. Step 6: Final answer
    x = 1,002,810.64

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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.