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Finding the Fourth Proportional to 558,016.76, 770,030.42 and 303,365.72

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Solution

The fourth proportional to 558,016.76, 770,030.42 and 303,365.72 is: 418,626.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,016.76 : 770,030.42 = 303,365.72 : x
  2. Step 2: Convert to fraction form
    558,016.76/770,030.42 = 303,365.72/x
  3. Step 3: Cross multiply
    558,016.76x = 770,030.42 × 303,365.72
  4. Step 4: Simplify right side
    558,016.76x = 233,600,832,785.20
  5. Step 5: Solve for x
    x = 233,600,832,785.20/558,016.76
  6. Step 6: Final answer
    x = 418,626.91

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Double scale
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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.