Home / 398,123,189.20-549,645,676.31-353,948,173.23

Finding the Fourth Proportional to 398,123,189.20, 549,645,676.31 and 353,948,173.23

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Solution

The fourth proportional to 398,123,189.20, 549,645,676.31 and 353,948,173.23 is: 488,658,004.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,123,189.20 : 549,645,676.31 = 353,948,173.23 : x
  2. Step 2: Convert to fraction form
    398,123,189.20/549,645,676.31 = 353,948,173.23/x
  3. Step 3: Cross multiply
    398,123,189.20x = 549,645,676.31 × 353,948,173.23
  4. Step 4: Simplify right side
    398,123,189.20x = 194,546,083,051,922,624
  5. Step 5: Solve for x
    x = 194,546,083,051,922,624/398,123,189.20
  6. Step 6: Final answer
    x = 488,658,004.19

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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.