Home / 931,811.09-1,285,102.58-641,885.36

Finding the Fourth Proportional to 931,811.09, 1,285,102.58 and 641,885.36

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Solution

The fourth proportional to 931,811.09, 1,285,102.58 and 641,885.36 is: 885,252.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,811.09 : 1,285,102.58 = 641,885.36 : x
  2. Step 2: Convert to fraction form
    931,811.09/1,285,102.58 = 641,885.36/x
  3. Step 3: Cross multiply
    931,811.09x = 1,285,102.58 × 641,885.36
  4. Step 4: Simplify right side
    931,811.09x = 824,888,522,565.29
  5. Step 5: Solve for x
    x = 824,888,522,565.29/931,811.09
  6. Step 6: Final answer
    x = 885,252.96

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Double scale
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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.