Home / 810,126.47-1,117,969.21-447,573.71

Finding the Fourth Proportional to 810,126.47, 1,117,969.21 and 447,573.71

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Solution

The fourth proportional to 810,126.47, 1,117,969.21 and 447,573.71 is: 617,648.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,126.47 : 1,117,969.21 = 447,573.71 : x
  2. Step 2: Convert to fraction form
    810,126.47/1,117,969.21 = 447,573.71/x
  3. Step 3: Cross multiply
    810,126.47x = 1,117,969.21 × 447,573.71
  4. Step 4: Simplify right side
    810,126.47x = 500,373,626,985.47
  5. Step 5: Solve for x
    x = 500,373,626,985.47/810,126.47
  6. Step 6: Final answer
    x = 617,648.78

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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.