Home / 644,118,978,712.68-888,886,875,467.30-355,080,888,366.12

Finding the Fourth Proportional to 644,118,978,712.68, 888,886,875,467.30 and 355,080,888,366.12

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Solution

The fourth proportional to 644,118,978,712.68, 888,886,875,467.30 and 355,080,888,366.12 is: 490,013,106,008.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,118,978,712.68 : 888,886,875,467.30 = 355,080,888,366.12 : x
  2. Step 2: Convert to fraction form
    644,118,978,712.68/888,886,875,467.30 = 355,080,888,366.12/x
  3. Step 3: Cross multiply
    644,118,978,712.68x = 888,886,875,467.30 × 355,080,888,366.12
  4. Step 4: Simplify right side
    644,118,978,712.68x = 315,626,741,397,913,553,862,656
  5. Step 5: Solve for x
    x = 315,626,741,397,913,553,862,656/644,118,978,712.68
  6. Step 6: Final answer
    x = 490,013,106,008.33

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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.