Home / 811,751.20-1,119,945.36-472,147.36

Finding the Fourth Proportional to 811,751.20, 1,119,945.36 and 472,147.36

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Solution

The fourth proportional to 811,751.20, 1,119,945.36 and 472,147.36 is: 651,405.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,751.20 : 1,119,945.36 = 472,147.36 : x
  2. Step 2: Convert to fraction form
    811,751.20/1,119,945.36 = 472,147.36/x
  3. Step 3: Cross multiply
    811,751.20x = 1,119,945.36 × 472,147.36
  4. Step 4: Simplify right side
    811,751.20x = 528,779,245,068.25
  5. Step 5: Solve for x
    x = 528,779,245,068.25/811,751.20
  6. Step 6: Final answer
    x = 651,405.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.