Home / 990,801.72-1,367,390.70-561,158.28

Finding the Fourth Proportional to 990,801.72, 1,367,390.70 and 561,158.28

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Solution

The fourth proportional to 990,801.72, 1,367,390.70 and 561,158.28 is: 774,446.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,801.72 : 1,367,390.70 = 561,158.28 : x
  2. Step 2: Convert to fraction form
    990,801.72/1,367,390.70 = 561,158.28/x
  3. Step 3: Cross multiply
    990,801.72x = 1,367,390.70 × 561,158.28
  4. Step 4: Simplify right side
    990,801.72x = 767,322,613,300.00
  5. Step 5: Solve for x
    x = 767,322,613,300.00/990,801.72
  6. Step 6: Final answer
    x = 774,446.19

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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.