Home / 874,858.50-1,312,288.56-243,789.12

Finding the Fourth Proportional to 874,858.50, 1,312,288.56 and 243,789.12

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Solution

The fourth proportional to 874,858.50, 1,312,288.56 and 243,789.12 is: 365,683.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,858.50 : 1,312,288.56 = 243,789.12 : x
  2. Step 2: Convert to fraction form
    874,858.50/1,312,288.56 = 243,789.12/x
  3. Step 3: Cross multiply
    874,858.50x = 1,312,288.56 × 243,789.12
  4. Step 4: Simplify right side
    874,858.50x = 319,921,673,228.47
  5. Step 5: Solve for x
    x = 319,921,673,228.47/874,858.50
  6. Step 6: Final answer
    x = 365,683.91

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Half scale
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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.