Home / 1,212,371.40-1,818,384.30-413,689.80

Finding the Fourth Proportional to 1,212,371.40, 1,818,384.30 and 413,689.80

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Solution

The fourth proportional to 1,212,371.40, 1,818,384.30 and 413,689.80 is: 620,475.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,371.40 : 1,818,384.30 = 413,689.80 : x
  2. Step 2: Convert to fraction form
    1,212,371.40/1,818,384.30 = 413,689.80/x
  3. Step 3: Cross multiply
    1,212,371.40x = 1,818,384.30 × 413,689.80
  4. Step 4: Simplify right side
    1,212,371.40x = 752,247,037,390.14
  5. Step 5: Solve for x
    x = 752,247,037,390.14/1,212,371.40
  6. Step 6: Final answer
    x = 620,475.74

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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.