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Finding the Fourth Proportional to 440,687.32, 607,924.64 and 287,814.98

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Solution

The fourth proportional to 440,687.32, 607,924.64 and 287,814.98 is: 397,038.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,687.32 : 607,924.64 = 287,814.98 : x
  2. Step 2: Convert to fraction form
    440,687.32/607,924.64 = 287,814.98/x
  3. Step 3: Cross multiply
    440,687.32x = 607,924.64 × 287,814.98
  4. Step 4: Simplify right side
    440,687.32x = 174,969,820,342.46
  5. Step 5: Solve for x
    x = 174,969,820,342.46/440,687.32
  6. Step 6: Final answer
    x = 397,038.47

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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.