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Finding the Fourth Proportional to 665,905.92, 918,953.70 and 364,099.92

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Solution

The fourth proportional to 665,905.92, 918,953.70 and 364,099.92 is: 502,459.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,905.92 : 918,953.70 = 364,099.92 : x
  2. Step 2: Convert to fraction form
    665,905.92/918,953.70 = 364,099.92/x
  3. Step 3: Cross multiply
    665,905.92x = 918,953.70 × 364,099.92
  4. Step 4: Simplify right side
    665,905.92x = 334,590,968,653.70
  5. Step 5: Solve for x
    x = 334,590,968,653.70/665,905.92
  6. Step 6: Final answer
    x = 502,459.82

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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.