Home / 878,414.68-1,212,161.96-485,924.21

Finding the Fourth Proportional to 878,414.68, 1,212,161.96 and 485,924.21

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Solution

The fourth proportional to 878,414.68, 1,212,161.96 and 485,924.21 is: 670,547.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,414.68 : 1,212,161.96 = 485,924.21 : x
  2. Step 2: Convert to fraction form
    878,414.68/1,212,161.96 = 485,924.21/x
  3. Step 3: Cross multiply
    878,414.68x = 1,212,161.96 × 485,924.21
  4. Step 4: Simplify right side
    878,414.68x = 589,018,849,323.07
  5. Step 5: Solve for x
    x = 589,018,849,323.07/878,414.68
  6. Step 6: Final answer
    x = 670,547.60

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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.