Home / 813,420.68-1,122,263.82-469,210.37

Finding the Fourth Proportional to 813,420.68, 1,122,263.82 and 469,210.37

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Solution

The fourth proportional to 813,420.68, 1,122,263.82 and 469,210.37 is: 647,362.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,420.68 : 1,122,263.82 = 469,210.37 : x
  2. Step 2: Convert to fraction form
    813,420.68/1,122,263.82 = 469,210.37/x
  3. Step 3: Cross multiply
    813,420.68x = 1,122,263.82 × 469,210.37
  4. Step 4: Simplify right side
    813,420.68x = 526,577,816,608.49
  5. Step 5: Solve for x
    x = 526,577,816,608.49/813,420.68
  6. Step 6: Final answer
    x = 647,362.22

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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.