Home / 856,890.81-1,285,446.78-288,026.60

Finding the Fourth Proportional to 856,890.81, 1,285,446.78 and 288,026.60

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Solution

The fourth proportional to 856,890.81, 1,285,446.78 and 288,026.60 is: 432,077.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,890.81 : 1,285,446.78 = 288,026.60 : x
  2. Step 2: Convert to fraction form
    856,890.81/1,285,446.78 = 288,026.60/x
  3. Step 3: Cross multiply
    856,890.81x = 1,285,446.78 × 288,026.60
  4. Step 4: Simplify right side
    856,890.81x = 370,242,859,097.11
  5. Step 5: Solve for x
    x = 370,242,859,097.11/856,890.81
  6. Step 6: Final answer
    x = 432,077.06

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Double scale
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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.