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Finding the Fourth Proportional to 551,679.86, 761,657.86 and 437,420.05

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Solution

The fourth proportional to 551,679.86, 761,657.86 and 437,420.05 is: 603,908.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,679.86 : 761,657.86 = 437,420.05 : x
  2. Step 2: Convert to fraction form
    551,679.86/761,657.86 = 437,420.05/x
  3. Step 3: Cross multiply
    551,679.86x = 761,657.86 × 437,420.05
  4. Step 4: Simplify right side
    551,679.86x = 333,164,416,206.40
  5. Step 5: Solve for x
    x = 333,164,416,206.40/551,679.86
  6. Step 6: Final answer
    x = 603,908.97

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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.