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Finding the Fourth Proportional to 551,390.37, 761,008.86 and 379,164.12

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Solution

The fourth proportional to 551,390.37, 761,008.86 and 379,164.12 is: 523,308.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,390.37 : 761,008.86 = 379,164.12 : x
  2. Step 2: Convert to fraction form
    551,390.37/761,008.86 = 379,164.12/x
  3. Step 3: Cross multiply
    551,390.37x = 761,008.86 × 379,164.12
  4. Step 4: Simplify right side
    551,390.37x = 288,547,254,714.10
  5. Step 5: Solve for x
    x = 288,547,254,714.10/551,390.37
  6. Step 6: Final answer
    x = 523,308.48

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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.