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Finding the Fourth Proportional to 483,563.40, 665,824.50 and 402,001.80

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Solution

The fourth proportional to 483,563.40, 665,824.50 and 402,001.80 is: 553,521.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,563.40 : 665,824.50 = 402,001.80 : x
  2. Step 2: Convert to fraction form
    483,563.40/665,824.50 = 402,001.80/x
  3. Step 3: Cross multiply
    483,563.40x = 665,824.50 × 402,001.80
  4. Step 4: Simplify right side
    483,563.40x = 267,662,647,484.10
  5. Step 5: Solve for x
    x = 267,662,647,484.10/483,563.40
  6. Step 6: Final answer
    x = 553,521.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.