Home / 990,820.35-1,367,416.40-561,176.91

Finding the Fourth Proportional to 990,820.35, 1,367,416.40 and 561,176.91

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Solution

The fourth proportional to 990,820.35, 1,367,416.40 and 561,176.91 is: 774,471.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,820.35 : 1,367,416.40 = 561,176.91 : x
  2. Step 2: Convert to fraction form
    990,820.35/1,367,416.40 = 561,176.91/x
  3. Step 3: Cross multiply
    990,820.35x = 1,367,416.40 × 561,176.91
  4. Step 4: Simplify right side
    990,820.35x = 767,362,504,601.18
  5. Step 5: Solve for x
    x = 767,362,504,601.18/990,820.35
  6. Step 6: Final answer
    x = 774,471.89

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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.