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Finding the Fourth Proportional to 519,609.78, 716,797.32 and 315,606.42

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Solution

The fourth proportional to 519,609.78, 716,797.32 and 315,606.42 is: 435,376.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,609.78 : 716,797.32 = 315,606.42 : x
  2. Step 2: Convert to fraction form
    519,609.78/716,797.32 = 315,606.42/x
  3. Step 3: Cross multiply
    519,609.78x = 716,797.32 × 315,606.42
  4. Step 4: Simplify right side
    519,609.78x = 226,225,836,030.79
  5. Step 5: Solve for x
    x = 226,225,836,030.79/519,609.78
  6. Step 6: Final answer
    x = 435,376.40

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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.