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Finding the Fourth Proportional to 445,484.40, 667,643.40 and 395,329.20

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Solution

The fourth proportional to 445,484.40, 667,643.40 and 395,329.20 is: 592,476.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,484.40 : 667,643.40 = 395,329.20 : x
  2. Step 2: Convert to fraction form
    445,484.40/667,643.40 = 395,329.20/x
  3. Step 3: Cross multiply
    445,484.40x = 667,643.40 × 395,329.20
  4. Step 4: Simplify right side
    445,484.40x = 263,938,931,207.28
  5. Step 5: Solve for x
    x = 263,938,931,207.28/445,484.40
  6. Step 6: Final answer
    x = 592,476.26

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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.