Home / 640,681,766.32-884,147,799.20-376,374,899.40

Finding the Fourth Proportional to 640,681,766.32, 884,147,799.20 and 376,374,899.40

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Solution

The fourth proportional to 640,681,766.32, 884,147,799.20 and 376,374,899.40 is: 519,401,450.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,681,766.32 : 884,147,799.20 = 376,374,899.40 : x
  2. Step 2: Convert to fraction form
    640,681,766.32/884,147,799.20 = 376,374,899.40/x
  3. Step 3: Cross multiply
    640,681,766.32x = 884,147,799.20 × 376,374,899.40
  4. Step 4: Simplify right side
    640,681,766.32x = 332,771,038,978,631,424
  5. Step 5: Solve for x
    x = 332,771,038,978,631,424/640,681,766.32
  6. Step 6: Final answer
    x = 519,401,450.88

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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.