Home / 827,166.09-1,239,005.40-378,264.71

Finding the Fourth Proportional to 827,166.09, 1,239,005.40 and 378,264.71

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Solution

The fourth proportional to 827,166.09, 1,239,005.40 and 378,264.71 is: 566,599.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,166.09 : 1,239,005.40 = 378,264.71 : x
  2. Step 2: Convert to fraction form
    827,166.09/1,239,005.40 = 378,264.71/x
  3. Step 3: Cross multiply
    827,166.09x = 1,239,005.40 × 378,264.71
  4. Step 4: Simplify right side
    827,166.09x = 468,672,012,124.41
  5. Step 5: Solve for x
    x = 468,672,012,124.41/827,166.09
  6. Step 6: Final answer
    x = 566,599.64

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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.