Home / 989,115.60-1,483,327.80-515,643.60

Finding the Fourth Proportional to 989,115.60, 1,483,327.80 and 515,643.60

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Solution

The fourth proportional to 989,115.60, 1,483,327.80 and 515,643.60 is: 773,285.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,115.60 : 1,483,327.80 = 515,643.60 : x
  2. Step 2: Convert to fraction form
    989,115.60/1,483,327.80 = 515,643.60/x
  3. Step 3: Cross multiply
    989,115.60x = 1,483,327.80 × 515,643.60
  4. Step 4: Simplify right side
    989,115.60x = 764,868,486,772.08
  5. Step 5: Solve for x
    x = 764,868,486,772.08/989,115.60
  6. Step 6: Final answer
    x = 773,285.23

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1.5x scale

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.