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Finding the Fourth Proportional to 503,141.40, 753,399.90 and 479,521.80

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Solution

The fourth proportional to 503,141.40, 753,399.90 and 479,521.80 is: 718,032.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,141.40 : 753,399.90 = 479,521.80 : x
  2. Step 2: Convert to fraction form
    503,141.40/753,399.90 = 479,521.80/x
  3. Step 3: Cross multiply
    503,141.40x = 753,399.90 × 479,521.80
  4. Step 4: Simplify right side
    503,141.40x = 361,271,676,167.82
  5. Step 5: Solve for x
    x = 361,271,676,167.82/503,141.40
  6. Step 6: Final answer
    x = 718,032.10

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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.