Home / 1,211,678.69-1,672,094.84-660,399.35

Finding the Fourth Proportional to 1,211,678.69, 1,672,094.84 and 660,399.35

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Solution

The fourth proportional to 1,211,678.69, 1,672,094.84 and 660,399.35 is: 911,339.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,678.69 : 1,672,094.84 = 660,399.35 : x
  2. Step 2: Convert to fraction form
    1,211,678.69/1,672,094.84 = 660,399.35/x
  3. Step 3: Cross multiply
    1,211,678.69x = 1,672,094.84 × 660,399.35
  4. Step 4: Simplify right side
    1,211,678.69x = 1,104,250,333,811.88
  5. Step 5: Solve for x
    x = 1,104,250,333,811.88/1,211,678.69
  6. Step 6: Final answer
    x = 911,339.24

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1.5x scale

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.