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Finding the Fourth Proportional to 571,719.62, 788,868.72 and 329,913.96

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Solution

The fourth proportional to 571,719.62, 788,868.72 and 329,913.96 is: 455,221.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,719.62 : 788,868.72 = 329,913.96 : x
  2. Step 2: Convert to fraction form
    571,719.62/788,868.72 = 329,913.96/x
  3. Step 3: Cross multiply
    571,719.62x = 788,868.72 × 329,913.96
  4. Step 4: Simplify right side
    571,719.62x = 260,258,803,335.33
  5. Step 5: Solve for x
    x = 260,258,803,335.33/571,719.62
  6. Step 6: Final answer
    x = 455,221.05

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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.