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Finding the Fourth Proportional to 551,769, 761,442.02 and 313,305

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Solution

The fourth proportional to 551,769, 761,442.02 and 313,305 is: 432,361.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,769 : 761,442.02 = 313,305 : x
  2. Step 2: Convert to fraction form
    551,769/761,442.02 = 313,305/x
  3. Step 3: Cross multiply
    551,769x = 761,442.02 × 313,305
  4. Step 4: Simplify right side
    551,769x = 238,563,592,076.10
  5. Step 5: Solve for x
    x = 238,563,592,076.10/551,769
  6. Step 6: Final answer
    x = 432,361.35

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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.