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Finding the Fourth Proportional to 620,656,762.60, 930,854,507.10 and 313,660,282.60

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Solution

The fourth proportional to 620,656,762.60, 930,854,507.10 and 313,660,282.60 is: 470,424,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,656,762.60 : 930,854,507.10 = 313,660,282.60 : x
  2. Step 2: Convert to fraction form
    620,656,762.60/930,854,507.10 = 313,660,282.60/x
  3. Step 3: Cross multiply
    620,656,762.60x = 930,854,507.10 × 313,660,282.60
  4. Step 4: Simplify right side
    620,656,762.60x = 291,972,087,756,469,760
  5. Step 5: Solve for x
    x = 291,972,087,756,469,760/620,656,762.60
  6. Step 6: Final answer
    x = 470,424,404.20

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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.