Home / 664,942.16-917,341.80-406,623.44

Finding the Fourth Proportional to 664,942.16, 917,341.80 and 406,623.44

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Solution

The fourth proportional to 664,942.16, 917,341.80 and 406,623.44 is: 560,970.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,942.16 : 917,341.80 = 406,623.44 : x
  2. Step 2: Convert to fraction form
    664,942.16/917,341.80 = 406,623.44/x
  3. Step 3: Cross multiply
    664,942.16x = 917,341.80 × 406,623.44
  4. Step 4: Simplify right side
    664,942.16x = 373,012,678,371.79
  5. Step 5: Solve for x
    x = 373,012,678,371.79/664,942.16
  6. Step 6: Final answer
    x = 560,970.11

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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.