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Finding the Fourth Proportional to 637,632,194.40, 956,448,291.60 and 443,132,661.60

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Solution

The fourth proportional to 637,632,194.40, 956,448,291.60 and 443,132,661.60 is: 664,698,992.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,632,194.40 : 956,448,291.60 = 443,132,661.60 : x
  2. Step 2: Convert to fraction form
    637,632,194.40/956,448,291.60 = 443,132,661.60/x
  3. Step 3: Cross multiply
    637,632,194.40x = 956,448,291.60 × 443,132,661.60
  4. Step 4: Simplify right side
    637,632,194.40x = 423,833,477,139,480,960
  5. Step 5: Solve for x
    x = 423,833,477,139,480,960/637,632,194.40
  6. Step 6: Final answer
    x = 664,698,992.40

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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.