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Finding the Fourth Proportional to 623,975.76, 936,163.98 and 432,657

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Solution

The fourth proportional to 623,975.76, 936,163.98 and 432,657 is: 649,124.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,975.76 : 936,163.98 = 432,657 : x
  2. Step 2: Convert to fraction form
    623,975.76/936,163.98 = 432,657/x
  3. Step 3: Cross multiply
    623,975.76x = 936,163.98 × 432,657
  4. Step 4: Simplify right side
    623,975.76x = 405,037,899,094.86
  5. Step 5: Solve for x
    x = 405,037,899,094.86/623,975.76
  6. Step 6: Final answer
    x = 649,124.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.