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Finding the Fourth Proportional to 641,940.90, 963,602.55 and 362,004.90

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Solution

The fourth proportional to 641,940.90, 963,602.55 and 362,004.90 is: 543,397.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,940.90 : 963,602.55 = 362,004.90 : x
  2. Step 2: Convert to fraction form
    641,940.90/963,602.55 = 362,004.90/x
  3. Step 3: Cross multiply
    641,940.90x = 963,602.55 × 362,004.90
  4. Step 4: Simplify right side
    641,940.90x = 348,828,844,752.50
  5. Step 5: Solve for x
    x = 348,828,844,752.50/641,940.90
  6. Step 6: Final answer
    x = 543,397.13

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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.