Home / 1,321,438,815.16-1,823,069,465.22-756,621,862.36

Finding the Fourth Proportional to 1,321,438,815.16, 1,823,069,465.22 and 756,621,862.36

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Solution

The fourth proportional to 1,321,438,815.16, 1,823,069,465.22 and 756,621,862.36 is: 1,043,842,664.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,438,815.16 : 1,823,069,465.22 = 756,621,862.36 : x
  2. Step 2: Convert to fraction form
    1,321,438,815.16/1,823,069,465.22 = 756,621,862.36/x
  3. Step 3: Cross multiply
    1,321,438,815.16x = 1,823,069,465.22 × 756,621,862.36
  4. Step 4: Simplify right side
    1,321,438,815.16x = 1,379,374,213,986,405,632
  5. Step 5: Solve for x
    x = 1,379,374,213,986,405,632/1,321,438,815.16
  6. Step 6: Final answer
    x = 1,043,842,664.65

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Double scale
Find fourth proportional to 1,321,438,816.16, 1,823,069,466.60 and 756,621,863.36
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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.