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Finding the Fourth Proportional to 476,900.37, 715,957.56 and 309,122.76

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Solution

The fourth proportional to 476,900.37, 715,957.56 and 309,122.76 is: 464,077.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,900.37 : 715,957.56 = 309,122.76 : x
  2. Step 2: Convert to fraction form
    476,900.37/715,957.56 = 309,122.76/x
  3. Step 3: Cross multiply
    476,900.37x = 715,957.56 × 309,122.76
  4. Step 4: Simplify right side
    476,900.37x = 221,318,776,990.07
  5. Step 5: Solve for x
    x = 221,318,776,990.07/476,900.37
  6. Step 6: Final answer
    x = 464,077.60

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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.