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Finding the Fourth Proportional to 911,911.94, 1,365,812.04 and 438,951.32

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Solution

The fourth proportional to 911,911.94, 1,365,812.04 and 438,951.32 is: 657,437.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,911.94 : 1,365,812.04 = 438,951.32 : x
  2. Step 2: Convert to fraction form
    911,911.94/1,365,812.04 = 438,951.32/x
  3. Step 3: Cross multiply
    911,911.94x = 1,365,812.04 × 438,951.32
  4. Step 4: Simplify right side
    911,911.94x = 599,524,997,829.89
  5. Step 5: Solve for x
    x = 599,524,997,829.89/911,911.94
  6. Step 6: Final answer
    x = 657,437.38

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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.