Home / 831,776,420.34-1,147,847,249.88-455,426,170.20

Finding the Fourth Proportional to 831,776,420.34, 1,147,847,249.88 and 455,426,170.20

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Solution

The fourth proportional to 831,776,420.34, 1,147,847,249.88 and 455,426,170.20 is: 628,485,809.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,776,420.34 : 1,147,847,249.88 = 455,426,170.20 : x
  2. Step 2: Convert to fraction form
    831,776,420.34/1,147,847,249.88 = 455,426,170.20/x
  3. Step 3: Cross multiply
    831,776,420.34x = 1,147,847,249.88 × 455,426,170.20
  4. Step 4: Simplify right side
    831,776,420.34x = 522,759,676,987,450,880
  5. Step 5: Solve for x
    x = 522,759,676,987,450,880/831,776,420.34
  6. Step 6: Final answer
    x = 628,485,809.65

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1.5x scale

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.