Home / 717,089,012.73-989,633,515.55-399,570,336.27

Finding the Fourth Proportional to 717,089,012.73, 989,633,515.55 and 399,570,336.27

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Solution

The fourth proportional to 717,089,012.73, 989,633,515.55 and 399,570,336.27 is: 551,435,302.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,089,012.73 : 989,633,515.55 = 399,570,336.27 : x
  2. Step 2: Convert to fraction form
    717,089,012.73/989,633,515.55 = 399,570,336.27/x
  3. Step 3: Cross multiply
    717,089,012.73x = 989,633,515.55 × 399,570,336.27
  4. Step 4: Simplify right side
    717,089,012.73x = 395,428,196,590,377,856
  5. Step 5: Solve for x
    x = 395,428,196,590,377,856/717,089,012.73
  6. Step 6: Final answer
    x = 551,435,302.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.