Home / 990,875.10-1,367,361.87-561,158.32

Finding the Fourth Proportional to 990,875.10, 1,367,361.87 and 561,158.32

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Solution

The fourth proportional to 990,875.10, 1,367,361.87 and 561,158.32 is: 774,372.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,875.10 : 1,367,361.87 = 561,158.32 : x
  2. Step 2: Convert to fraction form
    990,875.10/1,367,361.87 = 561,158.32/x
  3. Step 3: Cross multiply
    990,875.10x = 1,367,361.87 × 561,158.32
  4. Step 4: Simplify right side
    990,875.10x = 767,306,489,801.26
  5. Step 5: Solve for x
    x = 767,306,489,801.26/990,875.10
  6. Step 6: Final answer
    x = 774,372.56

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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.