Home / 811,405.10-1,214,774.85-727,424.30

Finding the Fourth Proportional to 811,405.10, 1,214,774.85 and 727,424.30

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Solution

The fourth proportional to 811,405.10, 1,214,774.85 and 727,424.30 is: 1,089,045.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,405.10 : 1,214,774.85 = 727,424.30 : x
  2. Step 2: Convert to fraction form
    811,405.10/1,214,774.85 = 727,424.30/x
  3. Step 3: Cross multiply
    811,405.10x = 1,214,774.85 × 727,424.30
  4. Step 4: Simplify right side
    811,405.10x = 883,656,744,918.86
  5. Step 5: Solve for x
    x = 883,656,744,918.86/811,405.10
  6. Step 6: Final answer
    x = 1,089,045.10

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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.