Home / 778,302.40-1,166,578.80-399,076.60

Finding the Fourth Proportional to 778,302.40, 1,166,578.80 and 399,076.60

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Solution

The fourth proportional to 778,302.40, 1,166,578.80 and 399,076.60 is: 598,166.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,302.40 : 1,166,578.80 = 399,076.60 : x
  2. Step 2: Convert to fraction form
    778,302.40/1,166,578.80 = 399,076.60/x
  3. Step 3: Cross multiply
    778,302.40x = 1,166,578.80 × 399,076.60
  4. Step 4: Simplify right side
    778,302.40x = 465,554,301,136.08
  5. Step 5: Solve for x
    x = 465,554,301,136.08/778,302.40
  6. Step 6: Final answer
    x = 598,166.34

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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.