Home / 620,136,021.40-930,204,032.10-505,344,765.40

Finding the Fourth Proportional to 620,136,021.40, 930,204,032.10 and 505,344,765.40

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Solution

The fourth proportional to 620,136,021.40, 930,204,032.10 and 505,344,765.40 is: 758,017,148.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,136,021.40 : 930,204,032.10 = 505,344,765.40 : x
  2. Step 2: Convert to fraction form
    620,136,021.40/930,204,032.10 = 505,344,765.40/x
  3. Step 3: Cross multiply
    620,136,021.40x = 930,204,032.10 × 505,344,765.40
  4. Step 4: Simplify right side
    620,136,021.40x = 470,073,738,375,708,544
  5. Step 5: Solve for x
    x = 470,073,738,375,708,544/620,136,021.40
  6. Step 6: Final answer
    x = 758,017,148.10

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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.