Home / 989,809.20-1,483,729.65-456,399.90

Finding the Fourth Proportional to 989,809.20, 1,483,729.65 and 456,399.90

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Solution

The fourth proportional to 989,809.20, 1,483,729.65 and 456,399.90 is: 684,146.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,809.20 : 1,483,729.65 = 456,399.90 : x
  2. Step 2: Convert to fraction form
    989,809.20/1,483,729.65 = 456,399.90/x
  3. Step 3: Cross multiply
    989,809.20x = 1,483,729.65 × 456,399.90
  4. Step 4: Simplify right side
    989,809.20x = 677,174,063,887.04
  5. Step 5: Solve for x
    x = 677,174,063,887.04/989,809.20
  6. Step 6: Final answer
    x = 684,146.06

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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.