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Finding the Fourth Proportional to 691,632.17, 954,450.51 and 385,708.87

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Solution

The fourth proportional to 691,632.17, 954,450.51 and 385,708.87 is: 532,277.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,632.17 : 954,450.51 = 385,708.87 : x
  2. Step 2: Convert to fraction form
    691,632.17/954,450.51 = 385,708.87/x
  3. Step 3: Cross multiply
    691,632.17x = 954,450.51 × 385,708.87
  4. Step 4: Simplify right side
    691,632.17x = 368,140,027,683.02
  5. Step 5: Solve for x
    x = 368,140,027,683.02/691,632.17
  6. Step 6: Final answer
    x = 532,277.19

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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.