Home / 920,876.13-1,270,847.35-512,977.86

Finding the Fourth Proportional to 920,876.13, 1,270,847.35 and 512,977.86

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Solution

The fourth proportional to 920,876.13, 1,270,847.35 and 512,977.86 is: 707,930.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,876.13 : 1,270,847.35 = 512,977.86 : x
  2. Step 2: Convert to fraction form
    920,876.13/1,270,847.35 = 512,977.86/x
  3. Step 3: Cross multiply
    920,876.13x = 1,270,847.35 × 512,977.86
  4. Step 4: Simplify right side
    920,876.13x = 651,916,553,989.67
  5. Step 5: Solve for x
    x = 651,916,553,989.67/920,876.13
  6. Step 6: Final answer
    x = 707,930.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.