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Finding the Fourth Proportional to 497,644.80, 746,467.20 and 438,547.20

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Solution

The fourth proportional to 497,644.80, 746,467.20 and 438,547.20 is: 657,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,644.80 : 746,467.20 = 438,547.20 : x
  2. Step 2: Convert to fraction form
    497,644.80/746,467.20 = 438,547.20/x
  3. Step 3: Cross multiply
    497,644.80x = 746,467.20 × 438,547.20
  4. Step 4: Simplify right side
    497,644.80x = 327,361,100,451.84
  5. Step 5: Solve for x
    x = 327,361,100,451.84/497,644.80
  6. Step 6: Final answer
    x = 657,820.80

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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.