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Finding the Fourth Proportional to 667,723.30, 920,712.95 and 483,597.72

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Solution

The fourth proportional to 667,723.30, 920,712.95 and 483,597.72 is: 666,825.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,723.30 : 920,712.95 = 483,597.72 : x
  2. Step 2: Convert to fraction form
    667,723.30/920,712.95 = 483,597.72/x
  3. Step 3: Cross multiply
    667,723.30x = 920,712.95 × 483,597.72
  4. Step 4: Simplify right side
    667,723.30x = 445,254,681,560.59
  5. Step 5: Solve for x
    x = 445,254,681,560.59/667,723.30
  6. Step 6: Final answer
    x = 666,825.14

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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.