Home / 821,411.42-1,133,123.18-519,780.38

Finding the Fourth Proportional to 821,411.42, 1,133,123.18 and 519,780.38

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Solution

The fourth proportional to 821,411.42, 1,133,123.18 and 519,780.38 is: 717,028.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,411.42 : 1,133,123.18 = 519,780.38 : x
  2. Step 2: Convert to fraction form
    821,411.42/1,133,123.18 = 519,780.38/x
  3. Step 3: Cross multiply
    821,411.42x = 1,133,123.18 × 519,780.38
  4. Step 4: Simplify right side
    821,411.42x = 588,975,197,087.21
  5. Step 5: Solve for x
    x = 588,975,197,087.21/821,411.42
  6. Step 6: Final answer
    x = 717,028.25

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Double scale
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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.