Home / 810,329.84-1,215,495.64-211,290.48

Finding the Fourth Proportional to 810,329.84, 1,215,495.64 and 211,290.48

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Solution

The fourth proportional to 810,329.84, 1,215,495.64 and 211,290.48 is: 316,935.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,329.84 : 1,215,495.64 = 211,290.48 : x
  2. Step 2: Convert to fraction form
    810,329.84/1,215,495.64 = 211,290.48/x
  3. Step 3: Cross multiply
    810,329.84x = 1,215,495.64 × 211,290.48
  4. Step 4: Simplify right side
    810,329.84x = 256,822,657,213.51
  5. Step 5: Solve for x
    x = 256,822,657,213.51/810,329.84
  6. Step 6: Final answer
    x = 316,935.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.