Home / 813,009.09-1,121,922.75-468,859.53

Finding the Fourth Proportional to 813,009.09, 1,121,922.75 and 468,859.53

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Solution

The fourth proportional to 813,009.09, 1,121,922.75 and 468,859.53 is: 647,008.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,009.09 : 1,121,922.75 = 468,859.53 : x
  2. Step 2: Convert to fraction form
    813,009.09/1,121,922.75 = 468,859.53/x
  3. Step 3: Cross multiply
    813,009.09x = 1,121,922.75 × 468,859.53
  4. Step 4: Simplify right side
    813,009.09x = 526,024,173,261.31
  5. Step 5: Solve for x
    x = 526,024,173,261.31/813,009.09
  6. Step 6: Final answer
    x = 647,008.97

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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.