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Finding the Fourth Proportional to 716,007.25, 988,056.17 and 393,730.93

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Solution

The fourth proportional to 716,007.25, 988,056.17 and 393,730.93 is: 543,330.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,007.25 : 988,056.17 = 393,730.93 : x
  2. Step 2: Convert to fraction form
    716,007.25/988,056.17 = 393,730.93/x
  3. Step 3: Cross multiply
    716,007.25x = 988,056.17 × 393,730.93
  4. Step 4: Simplify right side
    716,007.25x = 389,028,274,706.34
  5. Step 5: Solve for x
    x = 389,028,274,706.34/716,007.25
  6. Step 6: Final answer
    x = 543,330.08

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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.