Home / 990,877.39-1,367,365.01-561,160.60

Finding the Fourth Proportional to 990,877.39, 1,367,365.01 and 561,160.60

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Solution

The fourth proportional to 990,877.39, 1,367,365.01 and 561,160.60 is: 774,375.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,877.39 : 1,367,365.01 = 561,160.60 : x
  2. Step 2: Convert to fraction form
    990,877.39/1,367,365.01 = 561,160.60/x
  3. Step 3: Cross multiply
    990,877.39x = 1,367,365.01 × 561,160.60
  4. Step 4: Simplify right side
    990,877.39x = 767,311,363,206.39
  5. Step 5: Solve for x
    x = 767,311,363,206.39/990,877.39
  6. Step 6: Final answer
    x = 774,375.69

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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.