Home / 815,280.34-1,125,190.66-492,992.72

Finding the Fourth Proportional to 815,280.34, 1,125,190.66 and 492,992.72

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Solution

The fourth proportional to 815,280.34, 1,125,190.66 and 492,992.72 is: 680,392.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,280.34 : 1,125,190.66 = 492,992.72 : x
  2. Step 2: Convert to fraction form
    815,280.34/1,125,190.66 = 492,992.72/x
  3. Step 3: Cross multiply
    815,280.34x = 1,125,190.66 × 492,992.72
  4. Step 4: Simplify right side
    815,280.34x = 554,710,803,992.00
  5. Step 5: Solve for x
    x = 554,710,803,992.00/815,280.34
  6. Step 6: Final answer
    x = 680,392.71

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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.