Home / 643,295,915.36-965,352,005.44-274,833,643.60

Finding the Fourth Proportional to 643,295,915.36, 965,352,005.44 and 274,833,643.60

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Solution

The fourth proportional to 643,295,915.36, 965,352,005.44 and 274,833,643.60 is: 412,424,830.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,295,915.36 : 965,352,005.44 = 274,833,643.60 : x
  2. Step 2: Convert to fraction form
    643,295,915.36/965,352,005.44 = 274,833,643.60/x
  3. Step 3: Cross multiply
    643,295,915.36x = 965,352,005.44 × 274,833,643.60
  4. Step 4: Simplify right side
    643,295,915.36x = 265,311,209,011,642,272
  5. Step 5: Solve for x
    x = 265,311,209,011,642,272/643,295,915.36
  6. Step 6: Final answer
    x = 412,424,830.75

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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.