Home / 1,328,813.67-1,993,538.04-430,256.37

Finding the Fourth Proportional to 1,328,813.67, 1,993,538.04 and 430,256.37

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Solution

The fourth proportional to 1,328,813.67, 1,993,538.04 and 430,256.37 is: 645,487.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,813.67 : 1,993,538.04 = 430,256.37 : x
  2. Step 2: Convert to fraction form
    1,328,813.67/1,993,538.04 = 430,256.37/x
  3. Step 3: Cross multiply
    1,328,813.67x = 1,993,538.04 × 430,256.37
  4. Step 4: Simplify right side
    1,328,813.67x = 857,732,440,547.32
  5. Step 5: Solve for x
    x = 857,732,440,547.32/1,328,813.67
  6. Step 6: Final answer
    x = 645,487.37

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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.