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Finding the Fourth Proportional to 553,640.85, 828,985.05 and 553,640.85

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Solution

The fourth proportional to 553,640.85, 828,985.05 and 553,640.85 is: 828,985.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,640.85 : 828,985.05 = 553,640.85 : x
  2. Step 2: Convert to fraction form
    553,640.85/828,985.05 = 553,640.85/x
  3. Step 3: Cross multiply
    553,640.85x = 828,985.05 × 553,640.85
  4. Step 4: Simplify right side
    553,640.85x = 458,959,987,719.29
  5. Step 5: Solve for x
    x = 458,959,987,719.29/553,640.85
  6. Step 6: Final answer
    x = 828,985.05

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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.