Home / 509,447.07-703,037.51-280,004.28

Finding the Fourth Proportional to 509,447.07, 703,037.51 and 280,004.28

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Solution

The fourth proportional to 509,447.07, 703,037.51 and 280,004.28 is: 386,406.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,447.07 : 703,037.51 = 280,004.28 : x
  2. Step 2: Convert to fraction form
    509,447.07/703,037.51 = 280,004.28/x
  3. Step 3: Cross multiply
    509,447.07x = 703,037.51 × 280,004.28
  4. Step 4: Simplify right side
    509,447.07x = 196,853,508,814.15
  5. Step 5: Solve for x
    x = 196,853,508,814.15/509,447.07
  6. Step 6: Final answer
    x = 386,406.20

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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.