Home / 821,941.47-1,134,628.47-499,754.52

Finding the Fourth Proportional to 821,941.47, 1,134,628.47 and 499,754.52

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Solution

The fourth proportional to 821,941.47, 1,134,628.47 and 499,754.52 is: 689,873.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,941.47 : 1,134,628.47 = 499,754.52 : x
  2. Step 2: Convert to fraction form
    821,941.47/1,134,628.47 = 499,754.52/x
  3. Step 3: Cross multiply
    821,941.47x = 1,134,628.47 × 499,754.52
  4. Step 4: Simplify right side
    821,941.47x = 567,035,706,403.19
  5. Step 5: Solve for x
    x = 567,035,706,403.19/821,941.47
  6. Step 6: Final answer
    x = 689,873.58

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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.