Home / 873,863,849.87-1,205,949,889.92-477,412,517.51

Finding the Fourth Proportional to 873,863,849.87, 1,205,949,889.92 and 477,412,517.51

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Solution

The fourth proportional to 873,863,849.87, 1,205,949,889.92 and 477,412,517.51 is: 658,838,986.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,863,849.87 : 1,205,949,889.92 = 477,412,517.51 : x
  2. Step 2: Convert to fraction form
    873,863,849.87/1,205,949,889.92 = 477,412,517.51/x
  3. Step 3: Cross multiply
    873,863,849.87x = 1,205,949,889.92 × 477,412,517.51
  4. Step 4: Simplify right side
    873,863,849.87x = 575,735,572,937,614,592
  5. Step 5: Solve for x
    x = 575,735,572,937,614,592/873,863,849.87
  6. Step 6: Final answer
    x = 658,838,986.21

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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.