Home / 1,173,879,851.43-1,619,932,401.81-645,232,536.21

Finding the Fourth Proportional to 1,173,879,851.43, 1,619,932,401.81 and 645,232,536.21

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Solution

The fourth proportional to 1,173,879,851.43, 1,619,932,401.81 and 645,232,536.21 is: 890,408,921.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173,879,851.43 : 1,619,932,401.81 = 645,232,536.21 : x
  2. Step 2: Convert to fraction form
    1,173,879,851.43/1,619,932,401.81 = 645,232,536.21/x
  3. Step 3: Cross multiply
    1,173,879,851.43x = 1,619,932,401.81 × 645,232,536.21
  4. Step 4: Simplify right side
    1,173,879,851.43x = 1,045,233,092,108,623,104
  5. Step 5: Solve for x
    x = 1,045,233,092,108,623,104/1,173,879,851.43
  6. Step 6: Final answer
    x = 890,408,921.18

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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.