Home / 856,366.83-1,284,571.10-287,756.15

Finding the Fourth Proportional to 856,366.83, 1,284,571.10 and 287,756.15

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Solution

The fourth proportional to 856,366.83, 1,284,571.10 and 287,756.15 is: 431,641.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,366.83 : 1,284,571.10 = 287,756.15 : x
  2. Step 2: Convert to fraction form
    856,366.83/1,284,571.10 = 287,756.15/x
  3. Step 3: Cross multiply
    856,366.83x = 1,284,571.10 × 287,756.15
  4. Step 4: Simplify right side
    856,366.83x = 369,643,228,433.80
  5. Step 5: Solve for x
    x = 369,643,228,433.80/856,366.83
  6. Step 6: Final answer
    x = 431,641.23

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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.