Home / 1,128,226.80-1,557,090.96-644,681.04

Finding the Fourth Proportional to 1,128,226.80, 1,557,090.96 and 644,681.04

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Solution

The fourth proportional to 1,128,226.80, 1,557,090.96 and 644,681.04 is: 889,738.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,226.80 : 1,557,090.96 = 644,681.04 : x
  2. Step 2: Convert to fraction form
    1,128,226.80/1,557,090.96 = 644,681.04/x
  3. Step 3: Cross multiply
    1,128,226.80x = 1,557,090.96 × 644,681.04
  4. Step 4: Simplify right side
    1,128,226.80x = 1,003,827,019,467.40
  5. Step 5: Solve for x
    x = 1,003,827,019,467.40/1,128,226.80
  6. Step 6: Final answer
    x = 889,738.68

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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.