Home / 1,018,856.80-1,405,586.28-636,219.28

Finding the Fourth Proportional to 1,018,856.80, 1,405,586.28 and 636,219.28

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Solution

The fourth proportional to 1,018,856.80, 1,405,586.28 and 636,219.28 is: 877,710.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,856.80 : 1,405,586.28 = 636,219.28 : x
  2. Step 2: Convert to fraction form
    1,018,856.80/1,405,586.28 = 636,219.28/x
  3. Step 3: Cross multiply
    1,018,856.80x = 1,405,586.28 × 636,219.28
  4. Step 4: Simplify right side
    1,018,856.80x = 894,261,091,039.48
  5. Step 5: Solve for x
    x = 894,261,091,039.48/1,018,856.80
  6. Step 6: Final answer
    x = 877,710.28

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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.