Home / 642,230,808,906.93-963,139,973,311.77-211,871,153,117.49

Finding the Fourth Proportional to 642,230,808,906.93, 963,139,973,311.77 and 211,871,153,117.49

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Solution

The fourth proportional to 642,230,808,906.93, 963,139,973,311.77 and 211,871,153,117.49 is: 317,738,691,338.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,230,808,906.93 : 963,139,973,311.77 = 211,871,153,117.49 : x
  2. Step 2: Convert to fraction form
    642,230,808,906.93/963,139,973,311.77 = 211,871,153,117.49/x
  3. Step 3: Cross multiply
    642,230,808,906.93x = 963,139,973,311.77 × 211,871,153,117.49
  4. Step 4: Simplify right side
    642,230,808,906.93x = 204,061,576,759,113,240,543,232
  5. Step 5: Solve for x
    x = 204,061,576,759,113,240,543,232/642,230,808,906.93
  6. Step 6: Final answer
    x = 317,738,691,338.13

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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.