Home / 639,440,969.12-882,429,904.92-360,982,492.65

Finding the Fourth Proportional to 639,440,969.12, 882,429,904.92 and 360,982,492.65

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Solution

The fourth proportional to 639,440,969.12, 882,429,904.92 and 360,982,492.65 is: 498,156,611.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,440,969.12 : 882,429,904.92 = 360,982,492.65 : x
  2. Step 2: Convert to fraction form
    639,440,969.12/882,429,904.92 = 360,982,492.65/x
  3. Step 3: Cross multiply
    639,440,969.12x = 882,429,904.92 × 360,982,492.65
  4. Step 4: Simplify right side
    639,440,969.12x = 318,541,746,668,277,760
  5. Step 5: Solve for x
    x = 318,541,746,668,277,760/639,440,969.12
  6. Step 6: Final answer
    x = 498,156,611.87

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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.