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Finding the Fourth Proportional to 551,909.70, 827,208.45 and 495,485.10

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Solution

The fourth proportional to 551,909.70, 827,208.45 and 495,485.10 is: 742,638.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,909.70 : 827,208.45 = 495,485.10 : x
  2. Step 2: Convert to fraction form
    551,909.70/827,208.45 = 495,485.10/x
  3. Step 3: Cross multiply
    551,909.70x = 827,208.45 × 495,485.10
  4. Step 4: Simplify right side
    551,909.70x = 409,869,461,569.10
  5. Step 5: Solve for x
    x = 409,869,461,569.10/551,909.70
  6. Step 6: Final answer
    x = 742,638.63

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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.