Home / 936,720.36-1,405,081.50-438,434.28

Finding the Fourth Proportional to 936,720.36, 1,405,081.50 and 438,434.28

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Solution

The fourth proportional to 936,720.36, 1,405,081.50 and 438,434.28 is: 657,651.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,720.36 : 1,405,081.50 = 438,434.28 : x
  2. Step 2: Convert to fraction form
    936,720.36/1,405,081.50 = 438,434.28/x
  3. Step 3: Cross multiply
    936,720.36x = 1,405,081.50 × 438,434.28
  4. Step 4: Simplify right side
    936,720.36x = 616,035,895,793.82
  5. Step 5: Solve for x
    x = 616,035,895,793.82/936,720.36
  6. Step 6: Final answer
    x = 657,651.87

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1.5x scale

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.