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Finding the Fourth Proportional to 691,632.50, 954,450.96 and 385,709.20

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Solution

The fourth proportional to 691,632.50, 954,450.96 and 385,709.20 is: 532,277.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,632.50 : 954,450.96 = 385,709.20 : x
  2. Step 2: Convert to fraction form
    691,632.50/954,450.96 = 385,709.20/x
  3. Step 3: Cross multiply
    691,632.50x = 954,450.96 × 385,709.20
  4. Step 4: Simplify right side
    691,632.50x = 368,140,516,220.83
  5. Step 5: Solve for x
    x = 368,140,516,220.83/691,632.50
  6. Step 6: Final answer
    x = 532,277.64

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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.