Home / 2,189,806,414-3,021,188,843.56-1,249,333,428.40

Finding the Fourth Proportional to 2,189,806,414, 3,021,188,843.56 and 1,249,333,428.40

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Solution

The fourth proportional to 2,189,806,414, 3,021,188,843.56 and 1,249,333,428.40 is: 1,723,655,658.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189,806,414 : 3,021,188,843.56 = 1,249,333,428.40 : x
  2. Step 2: Convert to fraction form
    2,189,806,414/3,021,188,843.56 = 1,249,333,428.40/x
  3. Step 3: Cross multiply
    2,189,806,414x = 3,021,188,843.56 × 1,249,333,428.40
  4. Step 4: Simplify right side
    2,189,806,414x = 3,774,472,215,768,646,144
  5. Step 5: Solve for x
    x = 3,774,472,215,768,646,144/2,189,806,414
  6. Step 6: Final answer
    x = 1,723,655,658.16

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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.