Home / 620,592,653.40-930,888,980.10-211,662,144.60

Finding the Fourth Proportional to 620,592,653.40, 930,888,980.10 and 211,662,144.60

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Solution

The fourth proportional to 620,592,653.40, 930,888,980.10 and 211,662,144.60 is: 317,493,216.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,592,653.40 : 930,888,980.10 = 211,662,144.60 : x
  2. Step 2: Convert to fraction form
    620,592,653.40/930,888,980.10 = 211,662,144.60/x
  3. Step 3: Cross multiply
    620,592,653.40x = 930,888,980.10 × 211,662,144.60
  4. Step 4: Simplify right side
    620,592,653.40x = 197,033,957,912,472,736
  5. Step 5: Solve for x
    x = 197,033,957,912,472,736/620,592,653.40
  6. Step 6: Final answer
    x = 317,493,216.90

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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.