Home / 778,477.20-1,167,629.40-637,990.80

Finding the Fourth Proportional to 778,477.20, 1,167,629.40 and 637,990.80

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Solution

The fourth proportional to 778,477.20, 1,167,629.40 and 637,990.80 is: 956,915.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,477.20 : 1,167,629.40 = 637,990.80 : x
  2. Step 2: Convert to fraction form
    778,477.20/1,167,629.40 = 637,990.80/x
  3. Step 3: Cross multiply
    778,477.20x = 1,167,629.40 × 637,990.80
  4. Step 4: Simplify right side
    778,477.20x = 744,936,815,009.52
  5. Step 5: Solve for x
    x = 744,936,815,009.52/778,477.20
  6. Step 6: Final answer
    x = 956,915.39

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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.