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Finding the Fourth Proportional to 778,945, 1,168,417.50 and 187,969

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Solution

The fourth proportional to 778,945, 1,168,417.50 and 187,969 is: 281,953.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,945 : 1,168,417.50 = 187,969 : x
  2. Step 2: Convert to fraction form
    778,945/1,168,417.50 = 187,969/x
  3. Step 3: Cross multiply
    778,945x = 1,168,417.50 × 187,969
  4. Step 4: Simplify right side
    778,945x = 219,626,269,057.50
  5. Step 5: Solve for x
    x = 219,626,269,057.50/778,945
  6. Step 6: Final answer
    x = 281,953.50

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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.