Home / 660,195,890.40-990,293,835.60-354,085,874.40

Finding the Fourth Proportional to 660,195,890.40, 990,293,835.60 and 354,085,874.40

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Solution

The fourth proportional to 660,195,890.40, 990,293,835.60 and 354,085,874.40 is: 531,128,811.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,195,890.40 : 990,293,835.60 = 354,085,874.40 : x
  2. Step 2: Convert to fraction form
    660,195,890.40/990,293,835.60 = 354,085,874.40/x
  3. Step 3: Cross multiply
    660,195,890.40x = 990,293,835.60 × 354,085,874.40
  4. Step 4: Simplify right side
    660,195,890.40x = 350,649,058,691,355,840
  5. Step 5: Solve for x
    x = 350,649,058,691,355,840/660,195,890.40
  6. Step 6: Final answer
    x = 531,128,811.60

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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.