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Finding the Fourth Proportional to 665,631.84, 918,572.40 and 363,825.84

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Solution

The fourth proportional to 665,631.84, 918,572.40 and 363,825.84 is: 502,079.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,631.84 : 918,572.40 = 363,825.84 : x
  2. Step 2: Convert to fraction form
    665,631.84/918,572.40 = 363,825.84/x
  3. Step 3: Cross multiply
    665,631.84x = 918,572.40 × 363,825.84
  4. Step 4: Simplify right side
    665,631.84x = 334,200,375,030.82
  5. Step 5: Solve for x
    x = 334,200,375,030.82/665,631.84
  6. Step 6: Final answer
    x = 502,079.91

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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.