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Finding the Fourth Proportional to 445,439.79, 665,712.93 and 325,748.01

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Solution

The fourth proportional to 445,439.79, 665,712.93 and 325,748.01 is: 486,832.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,439.79 : 665,712.93 = 325,748.01 : x
  2. Step 2: Convert to fraction form
    445,439.79/665,712.93 = 325,748.01/x
  3. Step 3: Cross multiply
    445,439.79x = 665,712.93 × 325,748.01
  4. Step 4: Simplify right side
    445,439.79x = 216,854,662,178.77
  5. Step 5: Solve for x
    x = 216,854,662,178.77/445,439.79
  6. Step 6: Final answer
    x = 486,832.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.