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Finding the Fourth Proportional to 672,323.40, 1,008,485.10 and 318,029.40

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Solution

The fourth proportional to 672,323.40, 1,008,485.10 and 318,029.40 is: 477,044.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,323.40 : 1,008,485.10 = 318,029.40 : x
  2. Step 2: Convert to fraction form
    672,323.40/1,008,485.10 = 318,029.40/x
  3. Step 3: Cross multiply
    672,323.40x = 1,008,485.10 × 318,029.40
  4. Step 4: Simplify right side
    672,323.40x = 320,727,911,261.94
  5. Step 5: Solve for x
    x = 320,727,911,261.94/672,323.40
  6. Step 6: Final answer
    x = 477,044.10

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Similar ratio
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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.