Home / 810,140.25-1,117,980.32-447,579.39

Finding the Fourth Proportional to 810,140.25, 1,117,980.32 and 447,579.39

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Solution

The fourth proportional to 810,140.25, 1,117,980.32 and 447,579.39 is: 617,652.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,140.25 : 1,117,980.32 = 447,579.39 : x
  2. Step 2: Convert to fraction form
    810,140.25/1,117,980.32 = 447,579.39/x
  3. Step 3: Cross multiply
    810,140.25x = 1,117,980.32 × 447,579.39
  4. Step 4: Simplify right side
    810,140.25x = 500,384,947,419.71
  5. Step 5: Solve for x
    x = 500,384,947,419.71/810,140.25
  6. Step 6: Final answer
    x = 617,652.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.