Home / 989,143.80-1,483,424.10-389,905.80

Finding the Fourth Proportional to 989,143.80, 1,483,424.10 and 389,905.80

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Solution

The fourth proportional to 989,143.80, 1,483,424.10 and 389,905.80 is: 584,743.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,143.80 : 1,483,424.10 = 389,905.80 : x
  2. Step 2: Convert to fraction form
    989,143.80/1,483,424.10 = 389,905.80/x
  3. Step 3: Cross multiply
    989,143.80x = 1,483,424.10 × 389,905.80
  4. Step 4: Simplify right side
    989,143.80x = 578,395,660,449.78
  5. Step 5: Solve for x
    x = 578,395,660,449.78/989,143.80
  6. Step 6: Final answer
    x = 584,743.76

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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.