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Finding the Fourth Proportional to 538,940.90, 808,411.35 and 495,200.90

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Solution

The fourth proportional to 538,940.90, 808,411.35 and 495,200.90 is: 742,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,940.90 : 808,411.35 = 495,200.90 : x
  2. Step 2: Convert to fraction form
    538,940.90/808,411.35 = 495,200.90/x
  3. Step 3: Cross multiply
    538,940.90x = 808,411.35 × 495,200.90
  4. Step 4: Simplify right side
    538,940.90x = 400,326,028,090.22
  5. Step 5: Solve for x
    x = 400,326,028,090.22/538,940.90
  6. Step 6: Final answer
    x = 742,801.35

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Similar ratio
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1.5x scale

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.