Home / 431,232,341.80-646,848,512.70-327,920,211.40

Finding the Fourth Proportional to 431,232,341.80, 646,848,512.70 and 327,920,211.40

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Solution

The fourth proportional to 431,232,341.80, 646,848,512.70 and 327,920,211.40 is: 491,880,317.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,232,341.80 : 646,848,512.70 = 327,920,211.40 : x
  2. Step 2: Convert to fraction form
    431,232,341.80/646,848,512.70 = 327,920,211.40/x
  3. Step 3: Cross multiply
    431,232,341.80x = 646,848,512.70 × 327,920,211.40
  4. Step 4: Simplify right side
    431,232,341.80x = 212,114,701,028,359,584
  5. Step 5: Solve for x
    x = 212,114,701,028,359,584/431,232,341.80
  6. Step 6: Final answer
    x = 491,880,317.10

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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.