Home / 989,165.80-1,483,720.89-315,287.49

Finding the Fourth Proportional to 989,165.80, 1,483,720.89 and 315,287.49

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Solution

The fourth proportional to 989,165.80, 1,483,720.89 and 315,287.49 is: 472,922.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,165.80 : 1,483,720.89 = 315,287.49 : x
  2. Step 2: Convert to fraction form
    989,165.80/1,483,720.89 = 315,287.49/x
  3. Step 3: Cross multiply
    989,165.80x = 1,483,720.89 × 315,287.49
  4. Step 4: Simplify right side
    989,165.80x = 467,798,635,268.67
  5. Step 5: Solve for x
    x = 467,798,635,268.67/989,165.80
  6. Step 6: Final answer
    x = 472,922.37

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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.