Home / 519,947.90-779,919.79-164,989.59

Finding the Fourth Proportional to 519,947.90, 779,919.79 and 164,989.59

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Solution

The fourth proportional to 519,947.90, 779,919.79 and 164,989.59 is: 247,483.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,947.90 : 779,919.79 = 164,989.59 : x
  2. Step 2: Convert to fraction form
    519,947.90/779,919.79 = 164,989.59/x
  3. Step 3: Cross multiply
    519,947.90x = 779,919.79 × 164,989.59
  4. Step 4: Simplify right side
    519,947.90x = 128,678,645,972.51
  5. Step 5: Solve for x
    x = 128,678,645,972.51/519,947.90
  6. Step 6: Final answer
    x = 247,483.73

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Double scale
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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.