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Finding the Fourth Proportional to 538,943.40, 808,415.10 and 495,203.40

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Solution

The fourth proportional to 538,943.40, 808,415.10 and 495,203.40 is: 742,805.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,943.40 : 808,415.10 = 495,203.40 : x
  2. Step 2: Convert to fraction form
    538,943.40/808,415.10 = 495,203.40/x
  3. Step 3: Cross multiply
    538,943.40x = 808,415.10 × 495,203.40
  4. Step 4: Simplify right side
    538,943.40x = 400,329,906,131.34
  5. Step 5: Solve for x
    x = 400,329,906,131.34/538,943.40
  6. Step 6: Final answer
    x = 742,805.10

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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.