Home / 1,118,743.10-1,678,357.65-408,770

Finding the Fourth Proportional to 1,118,743.10, 1,678,357.65 and 408,770

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Solution

The fourth proportional to 1,118,743.10, 1,678,357.65 and 408,770 is: 613,243.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,743.10 : 1,678,357.65 = 408,770 : x
  2. Step 2: Convert to fraction form
    1,118,743.10/1,678,357.65 = 408,770/x
  3. Step 3: Cross multiply
    1,118,743.10x = 1,678,357.65 × 408,770
  4. Step 4: Simplify right side
    1,118,743.10x = 686,062,256,590.50
  5. Step 5: Solve for x
    x = 686,062,256,590.50/1,118,743.10
  6. Step 6: Final answer
    x = 613,243.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.