Home / 646,938,206.80-970,407,310.20-259,039,420.90

Finding the Fourth Proportional to 646,938,206.80, 970,407,310.20 and 259,039,420.90

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Solution

The fourth proportional to 646,938,206.80, 970,407,310.20 and 259,039,420.90 is: 388,559,131.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,938,206.80 : 970,407,310.20 = 259,039,420.90 : x
  2. Step 2: Convert to fraction form
    646,938,206.80/970,407,310.20 = 259,039,420.90/x
  3. Step 3: Cross multiply
    646,938,206.80x = 970,407,310.20 × 259,039,420.90
  4. Step 4: Simplify right side
    646,938,206.80x = 251,373,747,671,334,688
  5. Step 5: Solve for x
    x = 251,373,747,671,334,688/646,938,206.80
  6. Step 6: Final answer
    x = 388,559,131.35

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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.