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Finding the Fourth Proportional to 393,417,000.30, 551,590,016.10 and 393,417,000.30

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Solution

The fourth proportional to 393,417,000.30, 551,590,016.10 and 393,417,000.30 is: 551,590,016.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,417,000.30 : 551,590,016.10 = 393,417,000.30 : x
  2. Step 2: Convert to fraction form
    393,417,000.30/551,590,016.10 = 393,417,000.30/x
  3. Step 3: Cross multiply
    393,417,000.30x = 551,590,016.10 × 393,417,000.30
  4. Step 4: Simplify right side
    393,417,000.30x = 217,004,889,529,490,720
  5. Step 5: Solve for x
    x = 217,004,889,529,490,720/393,417,000.30
  6. Step 6: Final answer
    x = 551,590,016.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.