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Finding the Fourth Proportional to 444,547.20, 666,820.80 and 285,114.90

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Solution

The fourth proportional to 444,547.20, 666,820.80 and 285,114.90 is: 427,672.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,547.20 : 666,820.80 = 285,114.90 : x
  2. Step 2: Convert to fraction form
    444,547.20/666,820.80 = 285,114.90/x
  3. Step 3: Cross multiply
    444,547.20x = 666,820.80 × 285,114.90
  4. Step 4: Simplify right side
    444,547.20x = 190,120,545,709.92
  5. Step 5: Solve for x
    x = 190,120,545,709.92/444,547.20
  6. Step 6: Final answer
    x = 427,672.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.