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Finding the Fourth Proportional to 788,658.65, 1,182,988 and 189,619.84

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Solution

The fourth proportional to 788,658.65, 1,182,988 and 189,619.84 is: 284,429.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,658.65 : 1,182,988 = 189,619.84 : x
  2. Step 2: Convert to fraction form
    788,658.65/1,182,988 = 189,619.84/x
  3. Step 3: Cross multiply
    788,658.65x = 1,182,988 × 189,619.84
  4. Step 4: Simplify right side
    788,658.65x = 224,317,995,281.92
  5. Step 5: Solve for x
    x = 224,317,995,281.92/788,658.65
  6. Step 6: Final answer
    x = 284,429.77

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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.