Home / 485,154.82-669,059.54-383,423.31

Finding the Fourth Proportional to 485,154.82, 669,059.54 and 383,423.31

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Solution

The fourth proportional to 485,154.82, 669,059.54 and 383,423.31 is: 528,765.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,154.82 : 669,059.54 = 383,423.31 : x
  2. Step 2: Convert to fraction form
    485,154.82/669,059.54 = 383,423.31/x
  3. Step 3: Cross multiply
    485,154.82x = 669,059.54 × 383,423.31
  4. Step 4: Simplify right side
    485,154.82x = 256,533,025,958.04
  5. Step 5: Solve for x
    x = 256,533,025,958.04/485,154.82
  6. Step 6: Final answer
    x = 528,765.29

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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.