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Finding the Fourth Proportional to 666,863.52, 920,271.58 and 360,939.84

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Solution

The fourth proportional to 666,863.52, 920,271.58 and 360,939.84 is: 498,096.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,863.52 : 920,271.58 = 360,939.84 : x
  2. Step 2: Convert to fraction form
    666,863.52/920,271.58 = 360,939.84/x
  3. Step 3: Cross multiply
    666,863.52x = 920,271.58 × 360,939.84
  4. Step 4: Simplify right side
    666,863.52x = 332,162,676,841.75
  5. Step 5: Solve for x
    x = 332,162,676,841.75/666,863.52
  6. Step 6: Final answer
    x = 498,096.94

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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.