Home / 642,168,925,033.35-886,209,912,143.50-349,210,981,841.64

Finding the Fourth Proportional to 642,168,925,033.35, 886,209,912,143.50 and 349,210,981,841.64

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Solution

The fourth proportional to 642,168,925,033.35, 886,209,912,143.50 and 349,210,981,841.64 is: 481,920,288,374.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,168,925,033.35 : 886,209,912,143.50 = 349,210,981,841.64 : x
  2. Step 2: Convert to fraction form
    642,168,925,033.35/886,209,912,143.50 = 349,210,981,841.64/x
  3. Step 3: Cross multiply
    642,168,925,033.35x = 886,209,912,143.50 × 349,210,981,841.64
  4. Step 4: Simplify right side
    642,168,925,033.35x = 309,474,233,537,425,181,769,728
  5. Step 5: Solve for x
    x = 309,474,233,537,425,181,769,728/642,168,925,033.35
  6. Step 6: Final answer
    x = 481,920,288,374.83

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Double scale
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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.