Home / 665,036.20-998,180.70-349,719.40

Finding the Fourth Proportional to 665,036.20, 998,180.70 and 349,719.40

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Solution

The fourth proportional to 665,036.20, 998,180.70 and 349,719.40 is: 524,908.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,036.20 : 998,180.70 = 349,719.40 : x
  2. Step 2: Convert to fraction form
    665,036.20/998,180.70 = 349,719.40/x
  3. Step 3: Cross multiply
    665,036.20x = 998,180.70 × 349,719.40
  4. Step 4: Simplify right side
    665,036.20x = 349,083,155,495.58
  5. Step 5: Solve for x
    x = 349,083,155,495.58/665,036.20
  6. Step 6: Final answer
    x = 524,908.50

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Similar ratio
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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.