Home / 686,841.65-947,899.71-381,016.58

Finding the Fourth Proportional to 686,841.65, 947,899.71 and 381,016.58

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Solution

The fourth proportional to 686,841.65, 947,899.71 and 381,016.58 is: 525,835.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,841.65 : 947,899.71 = 381,016.58 : x
  2. Step 2: Convert to fraction form
    686,841.65/947,899.71 = 381,016.58/x
  3. Step 3: Cross multiply
    686,841.65x = 947,899.71 × 381,016.58
  4. Step 4: Simplify right side
    686,841.65x = 361,165,505,687.19
  5. Step 5: Solve for x
    x = 361,165,505,687.19/686,841.65
  6. Step 6: Final answer
    x = 525,835.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.