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Finding the Fourth Proportional to 665,828.50, 918,866.01 and 364,041.94

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Solution

The fourth proportional to 665,828.50, 918,866.01 and 364,041.94 is: 502,390.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,828.50 : 918,866.01 = 364,041.94 : x
  2. Step 2: Convert to fraction form
    665,828.50/918,866.01 = 364,041.94/x
  3. Step 3: Cross multiply
    665,828.50x = 918,866.01 × 364,041.94
  4. Step 4: Simplify right side
    665,828.50x = 334,505,764,880.46
  5. Step 5: Solve for x
    x = 334,505,764,880.46/665,828.50
  6. Step 6: Final answer
    x = 502,390.28

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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.