Home / 1,211,125,728.15-1,671,354,237.06-654,209,021.25

Finding the Fourth Proportional to 1,211,125,728.15, 1,671,354,237.06 and 654,209,021.25

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Solution

The fourth proportional to 1,211,125,728.15, 1,671,354,237.06 and 654,209,021.25 is: 902,808,844.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,125,728.15 : 1,671,354,237.06 = 654,209,021.25 : x
  2. Step 2: Convert to fraction form
    1,211,125,728.15/1,671,354,237.06 = 654,209,021.25/x
  3. Step 3: Cross multiply
    1,211,125,728.15x = 1,671,354,237.06 × 654,209,021.25
  4. Step 4: Simplify right side
    1,211,125,728.15x = 1,093,415,019,589,063,040
  5. Step 5: Solve for x
    x = 1,093,415,019,589,063,040/1,211,125,728.15
  6. Step 6: Final answer
    x = 902,808,844.84

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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.