Home / 1,988,999,049.60-2,983,770,855.36-678,549,261.60

Finding the Fourth Proportional to 1,988,999,049.60, 2,983,770,855.36 and 678,549,261.60

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Solution

The fourth proportional to 1,988,999,049.60, 2,983,770,855.36 and 678,549,261.60 is: 1,017,916,781.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,999,049.60 : 2,983,770,855.36 = 678,549,261.60 : x
  2. Step 2: Convert to fraction form
    1,988,999,049.60/2,983,770,855.36 = 678,549,261.60/x
  3. Step 3: Cross multiply
    1,988,999,049.60x = 2,983,770,855.36 × 678,549,261.60
  4. Step 4: Simplify right side
    1,988,999,049.60x = 2,024,635,510,688,128,512
  5. Step 5: Solve for x
    x = 2,024,635,510,688,128,512/1,988,999,049.60
  6. Step 6: Final answer
    x = 1,017,916,781.36

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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.