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Finding the Fourth Proportional to 665,280,679.70, 997,921,019.55 and 276,974,455.70

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Solution

The fourth proportional to 665,280,679.70, 997,921,019.55 and 276,974,455.70 is: 415,461,683.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,280,679.70 : 997,921,019.55 = 276,974,455.70 : x
  2. Step 2: Convert to fraction form
    665,280,679.70/997,921,019.55 = 276,974,455.70/x
  3. Step 3: Cross multiply
    665,280,679.70x = 997,921,019.55 × 276,974,455.70
  4. Step 4: Simplify right side
    665,280,679.70x = 276,398,631,221,450,272
  5. Step 5: Solve for x
    x = 276,398,631,221,450,272/665,280,679.70
  6. Step 6: Final answer
    x = 415,461,683.55

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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.