Home / 1,128,387.96-1,557,280.85-644,858.67

Finding the Fourth Proportional to 1,128,387.96, 1,557,280.85 and 644,858.67

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Solution

The fourth proportional to 1,128,387.96, 1,557,280.85 and 644,858.67 is: 889,965.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,387.96 : 1,557,280.85 = 644,858.67 : x
  2. Step 2: Convert to fraction form
    1,128,387.96/1,557,280.85 = 644,858.67/x
  3. Step 3: Cross multiply
    1,128,387.96x = 1,557,280.85 × 644,858.67
  4. Step 4: Simplify right side
    1,128,387.96x = 1,004,226,054,523.18
  5. Step 5: Solve for x
    x = 1,004,226,054,523.18/1,128,387.96
  6. Step 6: Final answer
    x = 889,965.23

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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.