Home / 819,457.09-1,130,930.72-612,365.86

Finding the Fourth Proportional to 819,457.09, 1,130,930.72 and 612,365.86

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Solution

The fourth proportional to 819,457.09, 1,130,930.72 and 612,365.86 is: 845,124.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,457.09 : 1,130,930.72 = 612,365.86 : x
  2. Step 2: Convert to fraction form
    819,457.09/1,130,930.72 = 612,365.86/x
  3. Step 3: Cross multiply
    819,457.09x = 1,130,930.72 × 612,365.86
  4. Step 4: Simplify right side
    819,457.09x = 692,543,362,953.22
  5. Step 5: Solve for x
    x = 692,543,362,953.22/819,457.09
  6. Step 6: Final answer
    x = 845,124.62

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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.