Home / 1,328,538.60-1,992,807.90-768,666.60

Finding the Fourth Proportional to 1,328,538.60, 1,992,807.90 and 768,666.60

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Solution

The fourth proportional to 1,328,538.60, 1,992,807.90 and 768,666.60 is: 1,152,999.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,538.60 : 1,992,807.90 = 768,666.60 : x
  2. Step 2: Convert to fraction form
    1,328,538.60/1,992,807.90 = 768,666.60/x
  3. Step 3: Cross multiply
    1,328,538.60x = 1,992,807.90 × 768,666.60
  4. Step 4: Simplify right side
    1,328,538.60x = 1,531,804,872,946.14
  5. Step 5: Solve for x
    x = 1,531,804,872,946.14/1,328,538.60
  6. Step 6: Final answer
    x = 1,152,999.90

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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.