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Finding the Fourth Proportional to 519,610.96, 716,986.20 and 315,555.52

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Solution

The fourth proportional to 519,610.96, 716,986.20 and 315,555.52 is: 435,419.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,610.96 : 716,986.20 = 315,555.52 : x
  2. Step 2: Convert to fraction form
    519,610.96/716,986.20 = 315,555.52/x
  3. Step 3: Cross multiply
    519,610.96x = 716,986.20 × 315,555.52
  4. Step 4: Simplify right side
    519,610.96x = 226,248,953,173.82
  5. Step 5: Solve for x
    x = 226,248,953,173.82/519,610.96
  6. Step 6: Final answer
    x = 435,419.90

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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.