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Finding the Fourth Proportional to 440,875.60, 607,828.80 and 318,264.64

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Solution

The fourth proportional to 440,875.60, 607,828.80 and 318,264.64 is: 438,786.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,875.60 : 607,828.80 = 318,264.64 : x
  2. Step 2: Convert to fraction form
    440,875.60/607,828.80 = 318,264.64/x
  3. Step 3: Cross multiply
    440,875.60x = 607,828.80 × 318,264.64
  4. Step 4: Simplify right side
    440,875.60x = 193,450,414,213.63
  5. Step 5: Solve for x
    x = 193,450,414,213.63/440,875.60
  6. Step 6: Final answer
    x = 438,786.85

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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.