Home / 685,275.57-1,027,148.72-285,783.57

Finding the Fourth Proportional to 685,275.57, 1,027,148.72 and 285,783.57

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Solution

The fourth proportional to 685,275.57, 1,027,148.72 and 285,783.57 is: 428,356.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,275.57 : 1,027,148.72 = 285,783.57 : x
  2. Step 2: Convert to fraction form
    685,275.57/1,027,148.72 = 285,783.57/x
  3. Step 3: Cross multiply
    685,275.57x = 1,027,148.72 × 285,783.57
  4. Step 4: Simplify right side
    685,275.57x = 293,542,226,693.61
  5. Step 5: Solve for x
    x = 293,542,226,693.61/685,275.57
  6. Step 6: Final answer
    x = 428,356.47

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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.