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Finding the Fourth Proportional to 553,016.50, 828,679.70 and 372,434.20

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Solution

The fourth proportional to 553,016.50, 828,679.70 and 372,434.20 is: 558,082.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,016.50 : 828,679.70 = 372,434.20 : x
  2. Step 2: Convert to fraction form
    553,016.50/828,679.70 = 372,434.20/x
  3. Step 3: Cross multiply
    553,016.50x = 828,679.70 × 372,434.20
  4. Step 4: Simplify right side
    553,016.50x = 308,628,661,125.74
  5. Step 5: Solve for x
    x = 308,628,661,125.74/553,016.50
  6. Step 6: Final answer
    x = 558,082.19

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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.