Home / 1,391,740,973.92-1,920,610,136.77-819,548,990.56

Finding the Fourth Proportional to 1,391,740,973.92, 1,920,610,136.77 and 819,548,990.56

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Solution

The fourth proportional to 1,391,740,973.92, 1,920,610,136.77 and 819,548,990.56 is: 1,130,982,078.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,740,973.92 : 1,920,610,136.77 = 819,548,990.56 : x
  2. Step 2: Convert to fraction form
    1,391,740,973.92/1,920,610,136.77 = 819,548,990.56/x
  3. Step 3: Cross multiply
    1,391,740,973.92x = 1,920,610,136.77 × 819,548,990.56
  4. Step 4: Simplify right side
    1,391,740,973.92x = 1,574,034,098,849,156,864
  5. Step 5: Solve for x
    x = 1,574,034,098,849,156,864/1,391,740,973.92
  6. Step 6: Final answer
    x = 1,130,982,078.09

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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.