Home / 2,120,177,421.82-2,925,750,463.12-1,215,284,637.24

Finding the Fourth Proportional to 2,120,177,421.82, 2,925,750,463.12 and 1,215,284,637.24

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Solution

The fourth proportional to 2,120,177,421.82, 2,925,750,463.12 and 1,215,284,637.24 is: 1,677,038,701.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120,177,421.82 : 2,925,750,463.12 = 1,215,284,637.24 : x
  2. Step 2: Convert to fraction form
    2,120,177,421.82/2,925,750,463.12 = 1,215,284,637.24/x
  3. Step 3: Cross multiply
    2,120,177,421.82x = 2,925,750,463.12 × 1,215,284,637.24
  4. Step 4: Simplify right side
    2,120,177,421.82x = 3,555,619,590,227,551,232
  5. Step 5: Solve for x
    x = 3,555,619,590,227,551,232/2,120,177,421.82
  6. Step 6: Final answer
    x = 1,677,038,701.40

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Double scale
Find fourth proportional to 2,120,177,422.82, 2,925,750,464.50 and 1,215,284,638.24
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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.