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Finding the Fourth Proportional to 912,519, 1,368,778.50 and 247,671

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Solution

The fourth proportional to 912,519, 1,368,778.50 and 247,671 is: 371,506.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,519 : 1,368,778.50 = 247,671 : x
  2. Step 2: Convert to fraction form
    912,519/1,368,778.50 = 247,671/x
  3. Step 3: Cross multiply
    912,519x = 1,368,778.50 × 247,671
  4. Step 4: Simplify right side
    912,519x = 339,006,739,873.50
  5. Step 5: Solve for x
    x = 339,006,739,873.50/912,519
  6. Step 6: Final answer
    x = 371,506.50

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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.