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Finding the Fourth Proportional to 488,297.40, 732,878.10 and 288,367.80

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Solution

The fourth proportional to 488,297.40, 732,878.10 and 288,367.80 is: 432,806.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,297.40 : 732,878.10 = 288,367.80 : x
  2. Step 2: Convert to fraction form
    488,297.40/732,878.10 = 288,367.80/x
  3. Step 3: Cross multiply
    488,297.40x = 732,878.10 × 288,367.80
  4. Step 4: Simplify right side
    488,297.40x = 211,338,445,365.18
  5. Step 5: Solve for x
    x = 211,338,445,365.18/488,297.40
  6. Step 6: Final answer
    x = 432,806.82

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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.