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Finding the Fourth Proportional to 643,774.76, 888,004.98 and 414,629

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Solution

The fourth proportional to 643,774.76, 888,004.98 and 414,629 is: 571,927.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,774.76 : 888,004.98 = 414,629 : x
  2. Step 2: Convert to fraction form
    643,774.76/888,004.98 = 414,629/x
  3. Step 3: Cross multiply
    643,774.76x = 888,004.98 × 414,629
  4. Step 4: Simplify right side
    643,774.76x = 368,192,616,852.42
  5. Step 5: Solve for x
    x = 368,192,616,852.42/643,774.76
  6. Step 6: Final answer
    x = 571,927.70

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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.