Home / 1,018,319.52-1,405,288.80-636,571.20

Finding the Fourth Proportional to 1,018,319.52, 1,405,288.80 and 636,571.20

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Solution

The fourth proportional to 1,018,319.52, 1,405,288.80 and 636,571.20 is: 878,473.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,319.52 : 1,405,288.80 = 636,571.20 : x
  2. Step 2: Convert to fraction form
    1,018,319.52/1,405,288.80 = 636,571.20/x
  3. Step 3: Cross multiply
    1,018,319.52x = 1,405,288.80 × 636,571.20
  4. Step 4: Simplify right side
    1,018,319.52x = 894,566,377,762.56
  5. Step 5: Solve for x
    x = 894,566,377,762.56/1,018,319.52
  6. Step 6: Final answer
    x = 878,473.17

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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.