Home / 815,422.33-1,125,845.76-509,636.16

Finding the Fourth Proportional to 815,422.33, 1,125,845.76 and 509,636.16

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Solution

The fourth proportional to 815,422.33, 1,125,845.76 and 509,636.16 is: 703,649.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,422.33 : 1,125,845.76 = 509,636.16 : x
  2. Step 2: Convert to fraction form
    815,422.33/1,125,845.76 = 509,636.16/x
  3. Step 3: Cross multiply
    815,422.33x = 1,125,845.76 × 509,636.16
  4. Step 4: Simplify right side
    815,422.33x = 573,771,709,878.68
  5. Step 5: Solve for x
    x = 573,771,709,878.68/815,422.33
  6. Step 6: Final answer
    x = 703,649.74

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1.5x scale

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.