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Finding the Fourth Proportional to 617,932.65, 926,898.98 and 380,505.45

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Solution

The fourth proportional to 617,932.65, 926,898.98 and 380,505.45 is: 570,758.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,932.65 : 926,898.98 = 380,505.45 : x
  2. Step 2: Convert to fraction form
    617,932.65/926,898.98 = 380,505.45/x
  3. Step 3: Cross multiply
    617,932.65x = 926,898.98 × 380,505.45
  4. Step 4: Simplify right side
    617,932.65x = 352,690,111,586.91
  5. Step 5: Solve for x
    x = 352,690,111,586.91/617,932.65
  6. Step 6: Final answer
    x = 570,758.18

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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.