Home / 519,974.19-717,569.13-305,117.84

Finding the Fourth Proportional to 519,974.19, 717,569.13 and 305,117.84

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Solution

The fourth proportional to 519,974.19, 717,569.13 and 305,117.84 is: 421,065.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,974.19 : 717,569.13 = 305,117.84 : x
  2. Step 2: Convert to fraction form
    519,974.19/717,569.13 = 305,117.84/x
  3. Step 3: Cross multiply
    519,974.19x = 717,569.13 × 305,117.84
  4. Step 4: Simplify right side
    519,974.19x = 218,943,139,408.43
  5. Step 5: Solve for x
    x = 218,943,139,408.43/519,974.19
  6. Step 6: Final answer
    x = 421,065.40

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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.