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Finding the Fourth Proportional to 575,417.40, 864,033.30 and 338,940.60

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Solution

The fourth proportional to 575,417.40, 864,033.30 and 338,940.60 is: 508,945.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,417.40 : 864,033.30 = 338,940.60 : x
  2. Step 2: Convert to fraction form
    575,417.40/864,033.30 = 338,940.60/x
  3. Step 3: Cross multiply
    575,417.40x = 864,033.30 × 338,940.60
  4. Step 4: Simplify right side
    575,417.40x = 292,855,965,121.98
  5. Step 5: Solve for x
    x = 292,855,965,121.98/575,417.40
  6. Step 6: Final answer
    x = 508,945.27

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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.