Home / 807,419.57-1,114,185.53-485,143.25

Finding the Fourth Proportional to 807,419.57, 1,114,185.53 and 485,143.25

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Solution

The fourth proportional to 807,419.57, 1,114,185.53 and 485,143.25 is: 669,465.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,419.57 : 1,114,185.53 = 485,143.25 : x
  2. Step 2: Convert to fraction form
    807,419.57/1,114,185.53 = 485,143.25/x
  3. Step 3: Cross multiply
    807,419.57x = 1,114,185.53 × 485,143.25
  4. Step 4: Simplify right side
    807,419.57x = 540,539,586,701.46
  5. Step 5: Solve for x
    x = 540,539,586,701.46/807,419.57
  6. Step 6: Final answer
    x = 669,465.55

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Double scale
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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.