Home / 917,999.10-1,376,998.65-512,091.90

Finding the Fourth Proportional to 917,999.10, 1,376,998.65 and 512,091.90

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Solution

The fourth proportional to 917,999.10, 1,376,998.65 and 512,091.90 is: 768,137.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,999.10 : 1,376,998.65 = 512,091.90 : x
  2. Step 2: Convert to fraction form
    917,999.10/1,376,998.65 = 512,091.90/x
  3. Step 3: Cross multiply
    917,999.10x = 1,376,998.65 × 512,091.90
  4. Step 4: Simplify right side
    917,999.10x = 705,149,854,975.94
  5. Step 5: Solve for x
    x = 705,149,854,975.94/917,999.10
  6. Step 6: Final answer
    x = 768,137.85

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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.