Home / 989,012.76-1,484,128.26-389,871.96

Finding the Fourth Proportional to 989,012.76, 1,484,128.26 and 389,871.96

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Solution

The fourth proportional to 989,012.76, 1,484,128.26 and 389,871.96 is: 585,048.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,012.76 : 1,484,128.26 = 389,871.96 : x
  2. Step 2: Convert to fraction form
    989,012.76/1,484,128.26 = 389,871.96/x
  3. Step 3: Cross multiply
    989,012.76x = 1,484,128.26 × 389,871.96
  4. Step 4: Simplify right side
    989,012.76x = 578,619,993,617.59
  5. Step 5: Solve for x
    x = 578,619,993,617.59/989,012.76
  6. Step 6: Final answer
    x = 585,048.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.