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Finding the Fourth Proportional to 654,970.80, 903,858.30 and 368,491.08

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Solution

The fourth proportional to 654,970.80, 903,858.30 and 368,491.08 is: 508,516.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,970.80 : 903,858.30 = 368,491.08 : x
  2. Step 2: Convert to fraction form
    654,970.80/903,858.30 = 368,491.08/x
  3. Step 3: Cross multiply
    654,970.80x = 903,858.30 × 368,491.08
  4. Step 4: Simplify right side
    654,970.80x = 333,063,721,133.96
  5. Step 5: Solve for x
    x = 333,063,721,133.96/654,970.80
  6. Step 6: Final answer
    x = 508,516.90

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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.