Home / 858,367.20-1,287,723.60-297,285.60

Finding the Fourth Proportional to 858,367.20, 1,287,723.60 and 297,285.60

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Solution

The fourth proportional to 858,367.20, 1,287,723.60 and 297,285.60 is: 445,988.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,367.20 : 1,287,723.60 = 297,285.60 : x
  2. Step 2: Convert to fraction form
    858,367.20/1,287,723.60 = 297,285.60/x
  3. Step 3: Cross multiply
    858,367.20x = 1,287,723.60 × 297,285.60
  4. Step 4: Simplify right side
    858,367.20x = 382,821,683,060.16
  5. Step 5: Solve for x
    x = 382,821,683,060.16/858,367.20
  6. Step 6: Final answer
    x = 445,988.25

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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.