Home / 815,101.20-1,124,817.77-488,598.68

Finding the Fourth Proportional to 815,101.20, 1,124,817.77 and 488,598.68

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Solution

The fourth proportional to 815,101.20, 1,124,817.77 and 488,598.68 is: 674,253.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,101.20 : 1,124,817.77 = 488,598.68 : x
  2. Step 2: Convert to fraction form
    815,101.20/1,124,817.77 = 488,598.68/x
  3. Step 3: Cross multiply
    815,101.20x = 1,124,817.77 × 488,598.68
  4. Step 4: Simplify right side
    815,101.20x = 549,584,477,662.54
  5. Step 5: Solve for x
    x = 549,584,477,662.54/815,101.20
  6. Step 6: Final answer
    x = 674,253.06

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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.