Home / 660,879,140.60-990,468,405.30-401,819,367.80

Finding the Fourth Proportional to 660,879,140.60, 990,468,405.30 and 401,819,367.80

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Solution

The fourth proportional to 660,879,140.60, 990,468,405.30 and 401,819,367.80 is: 602,212,059.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,879,140.60 : 990,468,405.30 = 401,819,367.80 : x
  2. Step 2: Convert to fraction form
    660,879,140.60/990,468,405.30 = 401,819,367.80/x
  3. Step 3: Cross multiply
    660,879,140.60x = 990,468,405.30 × 401,819,367.80
  4. Step 4: Simplify right side
    660,879,140.60x = 397,989,388,443,520,192
  5. Step 5: Solve for x
    x = 397,989,388,443,520,192/660,879,140.60
  6. Step 6: Final answer
    x = 602,212,059.65

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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.