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Finding the Fourth Proportional to 654,673.17, 903,313.50 and 382,688.47

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Solution

The fourth proportional to 654,673.17, 903,313.50 and 382,688.47 is: 528,030.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,673.17 : 903,313.50 = 382,688.47 : x
  2. Step 2: Convert to fraction form
    654,673.17/903,313.50 = 382,688.47/x
  3. Step 3: Cross multiply
    654,673.17x = 903,313.50 × 382,688.47
  4. Step 4: Simplify right side
    654,673.17x = 345,687,656,728.78
  5. Step 5: Solve for x
    x = 345,687,656,728.78/654,673.17
  6. Step 6: Final answer
    x = 528,030.89

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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.