Home / 485,541.34-670,049.94-281,713.66

Finding the Fourth Proportional to 485,541.34, 670,049.94 and 281,713.66

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Solution

The fourth proportional to 485,541.34, 670,049.94 and 281,713.66 is: 388,766.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,541.34 : 670,049.94 = 281,713.66 : x
  2. Step 2: Convert to fraction form
    485,541.34/670,049.94 = 281,713.66/x
  3. Step 3: Cross multiply
    485,541.34x = 670,049.94 × 281,713.66
  4. Step 4: Simplify right side
    485,541.34x = 188,762,220,980.18
  5. Step 5: Solve for x
    x = 188,762,220,980.18/485,541.34
  6. Step 6: Final answer
    x = 388,766.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.