Home / 756,211,529.52-1,043,590,363.36-421,680,786.76

Finding the Fourth Proportional to 756,211,529.52, 1,043,590,363.36 and 421,680,786.76

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Solution

The fourth proportional to 756,211,529.52, 1,043,590,363.36 and 421,680,786.76 is: 581,929,775.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,211,529.52 : 1,043,590,363.36 = 421,680,786.76 : x
  2. Step 2: Convert to fraction form
    756,211,529.52/1,043,590,363.36 = 421,680,786.76/x
  3. Step 3: Cross multiply
    756,211,529.52x = 1,043,590,363.36 × 421,680,786.76
  4. Step 4: Simplify right side
    756,211,529.52x = 440,062,005,476,799,104
  5. Step 5: Solve for x
    x = 440,062,005,476,799,104/756,211,529.52
  6. Step 6: Final answer
    x = 581,929,775.33

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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.