Home / 858,299.64-1,287,493.14-289,701.48

Finding the Fourth Proportional to 858,299.64, 1,287,493.14 and 289,701.48

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Solution

The fourth proportional to 858,299.64, 1,287,493.14 and 289,701.48 is: 434,566.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,299.64 : 1,287,493.14 = 289,701.48 : x
  2. Step 2: Convert to fraction form
    858,299.64/1,287,493.14 = 289,701.48/x
  3. Step 3: Cross multiply
    858,299.64x = 1,287,493.14 × 289,701.48
  4. Step 4: Simplify right side
    858,299.64x = 372,988,668,147.85
  5. Step 5: Solve for x
    x = 372,988,668,147.85/858,299.64
  6. Step 6: Final answer
    x = 434,566.96

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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.