Home / 699,990.30-1,048,819.05-657,999.90

Finding the Fourth Proportional to 699,990.30, 1,048,819.05 and 657,999.90

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Solution

The fourth proportional to 699,990.30, 1,048,819.05 and 657,999.90 is: 985,903.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,990.30 : 1,048,819.05 = 657,999.90 : x
  2. Step 2: Convert to fraction form
    699,990.30/1,048,819.05 = 657,999.90/x
  3. Step 3: Cross multiply
    699,990.30x = 1,048,819.05 × 657,999.90
  4. Step 4: Simplify right side
    699,990.30x = 690,122,830,018.10
  5. Step 5: Solve for x
    x = 690,122,830,018.10/699,990.30
  6. Step 6: Final answer
    x = 985,903.42

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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.