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Finding the Fourth Proportional to 551,902.34, 761,688.38 and 306,911.54

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Solution

The fourth proportional to 551,902.34, 761,688.38 and 306,911.54 is: 423,573.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,902.34 : 761,688.38 = 306,911.54 : x
  2. Step 2: Convert to fraction form
    551,902.34/761,688.38 = 306,911.54/x
  3. Step 3: Cross multiply
    551,902.34x = 761,688.38 × 306,911.54
  4. Step 4: Simplify right side
    551,902.34x = 233,770,953,705.91
  5. Step 5: Solve for x
    x = 233,770,953,705.91/551,902.34
  6. Step 6: Final answer
    x = 423,573.04

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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.