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Finding the Fourth Proportional to 648,235.88, 894,615.09 and 357,903.43

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Solution

The fourth proportional to 648,235.88, 894,615.09 and 357,903.43 is: 493,934.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,235.88 : 894,615.09 = 357,903.43 : x
  2. Step 2: Convert to fraction form
    648,235.88/894,615.09 = 357,903.43/x
  3. Step 3: Cross multiply
    648,235.88x = 894,615.09 × 357,903.43
  4. Step 4: Simplify right side
    648,235.88x = 320,185,809,240.76
  5. Step 5: Solve for x
    x = 320,185,809,240.76/648,235.88
  6. Step 6: Final answer
    x = 493,934.11

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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.