Home / 990,756.38-1,367,255.76-561,025.46

Finding the Fourth Proportional to 990,756.38, 1,367,255.76 and 561,025.46

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Solution

The fourth proportional to 990,756.38, 1,367,255.76 and 561,025.46 is: 774,221.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,756.38 : 1,367,255.76 = 561,025.46 : x
  2. Step 2: Convert to fraction form
    990,756.38/1,367,255.76 = 561,025.46/x
  3. Step 3: Cross multiply
    990,756.38x = 1,367,255.76 × 561,025.46
  4. Step 4: Simplify right side
    990,756.38x = 767,065,291,691.65
  5. Step 5: Solve for x
    x = 767,065,291,691.65/990,756.38
  6. Step 6: Final answer
    x = 774,221.90

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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.