Home / 642,168,925,047.11-886,209,912,162.40-349,210,981,855.43

Finding the Fourth Proportional to 642,168,925,047.11, 886,209,912,162.40 and 349,210,981,855.43

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Solution

The fourth proportional to 642,168,925,047.11, 886,209,912,162.40 and 349,210,981,855.43 is: 481,920,288,393.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,168,925,047.11 : 886,209,912,162.40 = 349,210,981,855.43 : x
  2. Step 2: Convert to fraction form
    642,168,925,047.11/886,209,912,162.40 = 349,210,981,855.43/x
  3. Step 3: Cross multiply
    642,168,925,047.11x = 886,209,912,162.40 × 349,210,981,855.43
  4. Step 4: Simplify right side
    642,168,925,047.11x = 309,474,233,556,246,064,005,120
  5. Step 5: Solve for x
    x = 309,474,233,556,246,064,005,120/642,168,925,047.11
  6. Step 6: Final answer
    x = 481,920,288,393.81

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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.