Home / 856,011.80-1,284,017.70-413,643.80

Finding the Fourth Proportional to 856,011.80, 1,284,017.70 and 413,643.80

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Solution

The fourth proportional to 856,011.80, 1,284,017.70 and 413,643.80 is: 620,465.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,011.80 : 1,284,017.70 = 413,643.80 : x
  2. Step 2: Convert to fraction form
    856,011.80/1,284,017.70 = 413,643.80/x
  3. Step 3: Cross multiply
    856,011.80x = 1,284,017.70 × 413,643.80
  4. Step 4: Simplify right side
    856,011.80x = 531,125,960,695.26
  5. Step 5: Solve for x
    x = 531,125,960,695.26/856,011.80
  6. Step 6: Final answer
    x = 620,465.70

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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.