Home / 1,328,836.16-1,993,544.93-430,368.72

Finding the Fourth Proportional to 1,328,836.16, 1,993,544.93 and 430,368.72

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Solution

The fourth proportional to 1,328,836.16, 1,993,544.93 and 430,368.72 is: 645,647.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,836.16 : 1,993,544.93 = 430,368.72 : x
  2. Step 2: Convert to fraction form
    1,328,836.16/1,993,544.93 = 430,368.72/x
  3. Step 3: Cross multiply
    1,328,836.16x = 1,993,544.93 × 430,368.72
  4. Step 4: Simplify right side
    1,328,836.16x = 857,959,373,386.72
  5. Step 5: Solve for x
    x = 857,959,373,386.72/1,328,836.16
  6. Step 6: Final answer
    x = 645,647.22

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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.