Home / 485,240.52-669,631.96-281,409.69

Finding the Fourth Proportional to 485,240.52, 669,631.96 and 281,409.69

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Solution

The fourth proportional to 485,240.52, 669,631.96 and 281,409.69 is: 388,345.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,240.52 : 669,631.96 = 281,409.69 : x
  2. Step 2: Convert to fraction form
    485,240.52/669,631.96 = 281,409.69/x
  3. Step 3: Cross multiply
    485,240.52x = 669,631.96 × 281,409.69
  4. Step 4: Simplify right side
    485,240.52x = 188,440,925,140.57
  5. Step 5: Solve for x
    x = 188,440,925,140.57/485,240.52
  6. Step 6: Final answer
    x = 388,345.40

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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.