Home / 738,128.60-1,107,192.90-731,907.80

Finding the Fourth Proportional to 738,128.60, 1,107,192.90 and 731,907.80

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Solution

The fourth proportional to 738,128.60, 1,107,192.90 and 731,907.80 is: 1,097,861.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,128.60 : 1,107,192.90 = 731,907.80 : x
  2. Step 2: Convert to fraction form
    738,128.60/1,107,192.90 = 731,907.80/x
  3. Step 3: Cross multiply
    738,128.60x = 1,107,192.90 × 731,907.80
  4. Step 4: Simplify right side
    738,128.60x = 810,363,119,614.62
  5. Step 5: Solve for x
    x = 810,363,119,614.62/738,128.60
  6. Step 6: Final answer
    x = 1,097,861.70

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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.