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Finding the Fourth Proportional to 551,885.63, 761,665.09 and 306,894.65

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Solution

The fourth proportional to 551,885.63, 761,665.09 and 306,894.65 is: 423,549.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,885.63 : 761,665.09 = 306,894.65 : x
  2. Step 2: Convert to fraction form
    551,885.63/761,665.09 = 306,894.65/x
  3. Step 3: Cross multiply
    551,885.63x = 761,665.09 × 306,894.65
  4. Step 4: Simplify right side
    551,885.63x = 233,750,941,212.77
  5. Step 5: Solve for x
    x = 233,750,941,212.77/551,885.63
  6. Step 6: Final answer
    x = 423,549.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.