Home / 398,123,190.09-549,645,677.57-353,948,174.15

Finding the Fourth Proportional to 398,123,190.09, 549,645,677.57 and 353,948,174.15

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Solution

The fourth proportional to 398,123,190.09, 549,645,677.57 and 353,948,174.15 is: 488,658,005.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,123,190.09 : 549,645,677.57 = 353,948,174.15 : x
  2. Step 2: Convert to fraction form
    398,123,190.09/549,645,677.57 = 353,948,174.15/x
  3. Step 3: Cross multiply
    398,123,190.09x = 549,645,677.57 × 353,948,174.15
  4. Step 4: Simplify right side
    398,123,190.09x = 194,546,084,003,477,728
  5. Step 5: Solve for x
    x = 194,546,084,003,477,728/398,123,190.09
  6. Step 6: Final answer
    x = 488,658,005.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.