Home / 1,205,320-1,663,220.46-721,872.76

Finding the Fourth Proportional to 1,205,320, 1,663,220.46 and 721,872.76

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Solution

The fourth proportional to 1,205,320, 1,663,220.46 and 721,872.76 is: 996,111.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,320 : 1,663,220.46 = 721,872.76 : x
  2. Step 2: Convert to fraction form
    1,205,320/1,663,220.46 = 721,872.76/x
  3. Step 3: Cross multiply
    1,205,320x = 1,663,220.46 × 721,872.76
  4. Step 4: Simplify right side
    1,205,320x = 1,200,633,543,948.67
  5. Step 5: Solve for x
    x = 1,200,633,543,948.67/1,205,320
  6. Step 6: Final answer
    x = 996,111.86

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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.