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Finding the Fourth Proportional to 912,893.60, 1,370,506.80 and 486,768.80

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Solution

The fourth proportional to 912,893.60, 1,370,506.80 and 486,768.80 is: 730,775.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,893.60 : 1,370,506.80 = 486,768.80 : x
  2. Step 2: Convert to fraction form
    912,893.60/1,370,506.80 = 486,768.80/x
  3. Step 3: Cross multiply
    912,893.60x = 1,370,506.80 × 486,768.80
  4. Step 4: Simplify right side
    912,893.60x = 667,119,950,427.84
  5. Step 5: Solve for x
    x = 667,119,950,427.84/912,893.60
  6. Step 6: Final answer
    x = 730,775.14

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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.