Home / 1,328,607.40-1,993,202.70-429,896.20

Finding the Fourth Proportional to 1,328,607.40, 1,993,202.70 and 429,896.20

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Solution

The fourth proportional to 1,328,607.40, 1,993,202.70 and 429,896.20 is: 644,938.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,607.40 : 1,993,202.70 = 429,896.20 : x
  2. Step 2: Convert to fraction form
    1,328,607.40/1,993,202.70 = 429,896.20/x
  3. Step 3: Cross multiply
    1,328,607.40x = 1,993,202.70 × 429,896.20
  4. Step 4: Simplify right side
    1,328,607.40x = 856,870,266,559.74
  5. Step 5: Solve for x
    x = 856,870,266,559.74/1,328,607.40
  6. Step 6: Final answer
    x = 644,938.65

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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.