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Finding the Fourth Proportional to 9,990,269.64, 13,786,571.79 and 5,406,590.97

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Solution

The fourth proportional to 9,990,269.64, 13,786,571.79 and 5,406,590.97 is: 7,461,095.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990,269.64 : 13,786,571.79 = 5,406,590.97 : x
  2. Step 2: Convert to fraction form
    9,990,269.64/13,786,571.79 = 5,406,590.97/x
  3. Step 3: Cross multiply
    9,990,269.64x = 13,786,571.79 × 5,406,590.97
  4. Step 4: Simplify right side
    9,990,269.64x = 74,538,354,547,070.73
  5. Step 5: Solve for x
    x = 74,538,354,547,070.73/9,990,269.64
  6. Step 6: Final answer
    x = 7,461,095.37

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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.