Home / 830,991.71-1,146,768.87-449,018.49

Finding the Fourth Proportional to 830,991.71, 1,146,768.87 and 449,018.49

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Solution

The fourth proportional to 830,991.71, 1,146,768.87 and 449,018.49 is: 619,645.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,991.71 : 1,146,768.87 = 449,018.49 : x
  2. Step 2: Convert to fraction form
    830,991.71/1,146,768.87 = 449,018.49/x
  3. Step 3: Cross multiply
    830,991.71x = 1,146,768.87 × 449,018.49
  4. Step 4: Simplify right side
    830,991.71x = 514,920,422,131.44
  5. Step 5: Solve for x
    x = 514,920,422,131.44/830,991.71
  6. Step 6: Final answer
    x = 619,645.68

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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.