Home / 398,123,180.34-549,645,664.12-353,948,164.40

Finding the Fourth Proportional to 398,123,180.34, 549,645,664.12 and 353,948,164.40

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Solution

The fourth proportional to 398,123,180.34, 549,645,664.12 and 353,948,164.40 is: 488,657,992.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,123,180.34 : 549,645,664.12 = 353,948,164.40 : x
  2. Step 2: Convert to fraction form
    398,123,180.34/549,645,664.12 = 353,948,164.40/x
  3. Step 3: Cross multiply
    398,123,180.34x = 549,645,664.12 × 353,948,164.40
  4. Step 4: Simplify right side
    398,123,180.34x = 194,546,073,885,692,928
  5. Step 5: Solve for x
    x = 194,546,073,885,692,928/398,123,180.34
  6. Step 6: Final answer
    x = 488,657,992.03

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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.