Home / 646,938,205.80-970,407,308.70-259,039,419.90

Finding the Fourth Proportional to 646,938,205.80, 970,407,308.70 and 259,039,419.90

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Solution

The fourth proportional to 646,938,205.80, 970,407,308.70 and 259,039,419.90 is: 388,559,129.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,938,205.80 : 970,407,308.70 = 259,039,419.90 : x
  2. Step 2: Convert to fraction form
    646,938,205.80/970,407,308.70 = 259,039,419.90/x
  3. Step 3: Cross multiply
    646,938,205.80x = 970,407,308.70 × 259,039,419.90
  4. Step 4: Simplify right side
    646,938,205.80x = 251,373,746,312,368,256
  5. Step 5: Solve for x
    x = 251,373,746,312,368,256/646,938,205.80
  6. Step 6: Final answer
    x = 388,559,129.85

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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.