Home / 1,439,038.82-2,158,182.11-427,888.46

Finding the Fourth Proportional to 1,439,038.82, 2,158,182.11 and 427,888.46

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Solution

The fourth proportional to 1,439,038.82, 2,158,182.11 and 427,888.46 is: 641,720.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,038.82 : 2,158,182.11 = 427,888.46 : x
  2. Step 2: Convert to fraction form
    1,439,038.82/2,158,182.11 = 427,888.46/x
  3. Step 3: Cross multiply
    1,439,038.82x = 2,158,182.11 × 427,888.46
  4. Step 4: Simplify right side
    1,439,038.82x = 923,461,209,726.26
  5. Step 5: Solve for x
    x = 923,461,209,726.26/1,439,038.82
  6. Step 6: Final answer
    x = 641,720.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.