Home / 380,715.60-571,073.40-345,723.60

Finding the Fourth Proportional to 380,715.60, 571,073.40 and 345,723.60

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Solution

The fourth proportional to 380,715.60, 571,073.40 and 345,723.60 is: 518,585.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,715.60 : 571,073.40 = 345,723.60 : x
  2. Step 2: Convert to fraction form
    380,715.60/571,073.40 = 345,723.60/x
  3. Step 3: Cross multiply
    380,715.60x = 571,073.40 × 345,723.60
  4. Step 4: Simplify right side
    380,715.60x = 197,433,551,712.24
  5. Step 5: Solve for x
    x = 197,433,551,712.24/380,715.60
  6. Step 6: Final answer
    x = 518,585.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.