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Finding the Fourth Proportional to 717,771.69, 990,547.36 and 411,904.02

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Solution

The fourth proportional to 717,771.69, 990,547.36 and 411,904.02 is: 568,440.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,771.69 : 990,547.36 = 411,904.02 : x
  2. Step 2: Convert to fraction form
    717,771.69/990,547.36 = 411,904.02/x
  3. Step 3: Cross multiply
    717,771.69x = 990,547.36 × 411,904.02
  4. Step 4: Simplify right side
    717,771.69x = 408,010,434,631.65
  5. Step 5: Solve for x
    x = 408,010,434,631.65/717,771.69
  6. Step 6: Final answer
    x = 568,440.42

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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.