Home / 1,216,220.80-1,678,373.44-672,390.40

Finding the Fourth Proportional to 1,216,220.80, 1,678,373.44 and 672,390.40

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Solution

The fourth proportional to 1,216,220.80, 1,678,373.44 and 672,390.40 is: 927,892.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,220.80 : 1,678,373.44 = 672,390.40 : x
  2. Step 2: Convert to fraction form
    1,216,220.80/1,678,373.44 = 672,390.40/x
  3. Step 3: Cross multiply
    1,216,220.80x = 1,678,373.44 × 672,390.40
  4. Step 4: Simplify right side
    1,216,220.80x = 1,128,522,188,670.98
  5. Step 5: Solve for x
    x = 1,128,522,188,670.98/1,216,220.80
  6. Step 6: Final answer
    x = 927,892.52

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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.