Home / 643,760,448,709.86-888,436,373,220.81-373,168,667,600.10

Finding the Fourth Proportional to 643,760,448,709.86, 888,436,373,220.81 and 373,168,667,600.10

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Solution

The fourth proportional to 643,760,448,709.86, 888,436,373,220.81 and 373,168,667,600.10 is: 514,999,979,117.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,760,448,709.86 : 888,436,373,220.81 = 373,168,667,600.10 : x
  2. Step 2: Convert to fraction form
    643,760,448,709.86/888,436,373,220.81 = 373,168,667,600.10/x
  3. Step 3: Cross multiply
    643,760,448,709.86x = 888,436,373,220.81 × 373,168,667,600.10
  4. Step 4: Simplify right side
    643,760,448,709.86x = 331,536,617,642,274,834,087,936
  5. Step 5: Solve for x
    x = 331,536,617,642,274,834,087,936/643,760,448,709.86
  6. Step 6: Final answer
    x = 514,999,979,117.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.