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Finding the Fourth Proportional to 630,932.88, 945,330.04 and 381,090

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Solution

The fourth proportional to 630,932.88, 945,330.04 and 381,090 is: 570,989.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,932.88 : 945,330.04 = 381,090 : x
  2. Step 2: Convert to fraction form
    630,932.88/945,330.04 = 381,090/x
  3. Step 3: Cross multiply
    630,932.88x = 945,330.04 × 381,090
  4. Step 4: Simplify right side
    630,932.88x = 360,255,824,943.60
  5. Step 5: Solve for x
    x = 360,255,824,943.60/630,932.88
  6. Step 6: Final answer
    x = 570,989.14

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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.