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Finding the Fourth Proportional to 571,968.80, 858,644.40 and 319,450.40

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Solution

The fourth proportional to 571,968.80, 858,644.40 and 319,450.40 is: 479,561.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,968.80 : 858,644.40 = 319,450.40 : x
  2. Step 2: Convert to fraction form
    571,968.80/858,644.40 = 319,450.40/x
  3. Step 3: Cross multiply
    571,968.80x = 858,644.40 × 319,450.40
  4. Step 4: Simplify right side
    571,968.80x = 274,294,297,037.76
  5. Step 5: Solve for x
    x = 274,294,297,037.76/571,968.80
  6. Step 6: Final answer
    x = 479,561.64

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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.