Home / 620,034,428.70-930,051,643.05-426,324,184.20

Finding the Fourth Proportional to 620,034,428.70, 930,051,643.05 and 426,324,184.20

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Solution

The fourth proportional to 620,034,428.70, 930,051,643.05 and 426,324,184.20 is: 639,486,276.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,034,428.70 : 930,051,643.05 = 426,324,184.20 : x
  2. Step 2: Convert to fraction form
    620,034,428.70/930,051,643.05 = 426,324,184.20/x
  3. Step 3: Cross multiply
    620,034,428.70x = 930,051,643.05 × 426,324,184.20
  4. Step 4: Simplify right side
    620,034,428.70x = 396,503,507,987,160,832
  5. Step 5: Solve for x
    x = 396,503,507,987,160,832/620,034,428.70
  6. Step 6: Final answer
    x = 639,486,276.30

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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.