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Finding the Fourth Proportional to 654,673.11, 903,313.42 and 382,688.41

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Solution

The fourth proportional to 654,673.11, 903,313.42 and 382,688.41 is: 528,030.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,673.11 : 903,313.42 = 382,688.41 : x
  2. Step 2: Convert to fraction form
    654,673.11/903,313.42 = 382,688.41/x
  3. Step 3: Cross multiply
    654,673.11x = 903,313.42 × 382,688.41
  4. Step 4: Simplify right side
    654,673.11x = 345,687,570,001.45
  5. Step 5: Solve for x
    x = 345,687,570,001.45/654,673.11
  6. Step 6: Final answer
    x = 528,030.81

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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.