Home / 855,303.04-1,283,085.76-620,419.20

Finding the Fourth Proportional to 855,303.04, 1,283,085.76 and 620,419.20

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Solution

The fourth proportional to 855,303.04, 1,283,085.76 and 620,419.20 is: 930,723.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,303.04 : 1,283,085.76 = 620,419.20 : x
  2. Step 2: Convert to fraction form
    855,303.04/1,283,085.76 = 620,419.20/x
  3. Step 3: Cross multiply
    855,303.04x = 1,283,085.76 × 620,419.20
  4. Step 4: Simplify right side
    855,303.04x = 796,051,040,750.59
  5. Step 5: Solve for x
    x = 796,051,040,750.59/855,303.04
  6. Step 6: Final answer
    x = 930,723.97

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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.