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Finding the Fourth Proportional to 553,398.72, 828,223.07 and 340,301.57

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Solution

The fourth proportional to 553,398.72, 828,223.07 and 340,301.57 is: 509,299.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,398.72 : 828,223.07 = 340,301.57 : x
  2. Step 2: Convert to fraction form
    553,398.72/828,223.07 = 340,301.57/x
  3. Step 3: Cross multiply
    553,398.72x = 828,223.07 × 340,301.57
  4. Step 4: Simplify right side
    553,398.72x = 281,845,605,188.60
  5. Step 5: Solve for x
    x = 281,845,605,188.60/553,398.72
  6. Step 6: Final answer
    x = 509,299.34

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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.