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Finding the Fourth Proportional to 665,800.50, 918,807.93 and 363,994.50

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Solution

The fourth proportional to 665,800.50, 918,807.93 and 363,994.50 is: 502,314.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,800.50 : 918,807.93 = 363,994.50 : x
  2. Step 2: Convert to fraction form
    665,800.50/918,807.93 = 363,994.50/x
  3. Step 3: Cross multiply
    665,800.50x = 918,807.93 × 363,994.50
  4. Step 4: Simplify right side
    665,800.50x = 334,441,033,076.39
  5. Step 5: Solve for x
    x = 334,441,033,076.39/665,800.50
  6. Step 6: Final answer
    x = 502,314.18

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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.