Home / 812,870.51-1,121,532.21-468,679.37

Finding the Fourth Proportional to 812,870.51, 1,121,532.21 and 468,679.37

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Solution

The fourth proportional to 812,870.51, 1,121,532.21 and 468,679.37 is: 646,645.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,870.51 : 1,121,532.21 = 468,679.37 : x
  2. Step 2: Convert to fraction form
    812,870.51/1,121,532.21 = 468,679.37/x
  3. Step 3: Cross multiply
    812,870.51x = 1,121,532.21 × 468,679.37
  4. Step 4: Simplify right side
    812,870.51x = 525,639,004,009.85
  5. Step 5: Solve for x
    x = 525,639,004,009.85/812,870.51
  6. Step 6: Final answer
    x = 646,645.44

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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.