Home / 856,070.93-1,284,161.75-287,429.06

Finding the Fourth Proportional to 856,070.93, 1,284,161.75 and 287,429.06

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Solution

The fourth proportional to 856,070.93, 1,284,161.75 and 287,429.06 is: 431,162.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,070.93 : 1,284,161.75 = 287,429.06 : x
  2. Step 2: Convert to fraction form
    856,070.93/1,284,161.75 = 287,429.06/x
  3. Step 3: Cross multiply
    856,070.93x = 1,284,161.75 × 287,429.06
  4. Step 4: Simplify right side
    856,070.93x = 369,105,396,832.50
  5. Step 5: Solve for x
    x = 369,105,396,832.50/856,070.93
  6. Step 6: Final answer
    x = 431,162.17

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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.