Home / 1,189,698,428.05-1,641,820,786.50-653,840,369.80

Finding the Fourth Proportional to 1,189,698,428.05, 1,641,820,786.50 and 653,840,369.80

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Solution

The fourth proportional to 1,189,698,428.05, 1,641,820,786.50 and 653,840,369.80 is: 902,320,020.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,698,428.05 : 1,641,820,786.50 = 653,840,369.80 : x
  2. Step 2: Convert to fraction form
    1,189,698,428.05/1,641,820,786.50 = 653,840,369.80/x
  3. Step 3: Cross multiply
    1,189,698,428.05x = 1,641,820,786.50 × 653,840,369.80
  4. Step 4: Simplify right side
    1,189,698,428.05x = 1,073,488,710,190,486,784
  5. Step 5: Solve for x
    x = 1,073,488,710,190,486,784/1,189,698,428.05
  6. Step 6: Final answer
    x = 902,320,020.67

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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.