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Finding the Fourth Proportional to 1,723,804.43, 2,584,808.95 and 643,428.65

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Solution

The fourth proportional to 1,723,804.43, 2,584,808.95 and 643,428.65 is: 964,807.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,723,804.43 : 2,584,808.95 = 643,428.65 : x
  2. Step 2: Convert to fraction form
    1,723,804.43/2,584,808.95 = 643,428.65/x
  3. Step 3: Cross multiply
    1,723,804.43x = 2,584,808.95 × 643,428.65
  4. Step 4: Simplify right side
    1,723,804.43x = 1,663,140,132,303.30
  5. Step 5: Solve for x
    x = 1,663,140,132,303.30/1,723,804.43
  6. Step 6: Final answer
    x = 964,807.90

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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.