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Finding the Fourth Proportional to 612,092.40, 917,810.55 and 256,704.90

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Solution

The fourth proportional to 612,092.40, 917,810.55 and 256,704.90 is: 384,919.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,092.40 : 917,810.55 = 256,704.90 : x
  2. Step 2: Convert to fraction form
    612,092.40/917,810.55 = 256,704.90/x
  3. Step 3: Cross multiply
    612,092.40x = 917,810.55 × 256,704.90
  4. Step 4: Simplify right side
    612,092.40x = 235,606,465,456.70
  5. Step 5: Solve for x
    x = 235,606,465,456.70/612,092.40
  6. Step 6: Final answer
    x = 384,919.77

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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.