Home / 990,815.08-1,367,569.56-561,348.22

Finding the Fourth Proportional to 990,815.08, 1,367,569.56 and 561,348.22

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Solution

The fourth proportional to 990,815.08, 1,367,569.56 and 561,348.22 is: 774,799.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,815.08 : 1,367,569.56 = 561,348.22 : x
  2. Step 2: Convert to fraction form
    990,815.08/1,367,569.56 = 561,348.22/x
  3. Step 3: Cross multiply
    990,815.08x = 1,367,569.56 × 561,348.22
  4. Step 4: Simplify right side
    990,815.08x = 767,682,738,232.18
  5. Step 5: Solve for x
    x = 767,682,738,232.18/990,815.08
  6. Step 6: Final answer
    x = 774,799.21

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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.