Home / 867,708.36-1,197,428.40-485,738.28

Finding the Fourth Proportional to 867,708.36, 1,197,428.40 and 485,738.28

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Solution

The fourth proportional to 867,708.36, 1,197,428.40 and 485,738.28 is: 670,313.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,708.36 : 1,197,428.40 = 485,738.28 : x
  2. Step 2: Convert to fraction form
    867,708.36/1,197,428.40 = 485,738.28/x
  3. Step 3: Cross multiply
    867,708.36x = 1,197,428.40 × 485,738.28
  4. Step 4: Simplify right side
    867,708.36x = 581,636,811,439.15
  5. Step 5: Solve for x
    x = 581,636,811,439.15/867,708.36
  6. Step 6: Final answer
    x = 670,313.71

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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.