Home / 986,005.80-1,478,144.70-669,436.20

Finding the Fourth Proportional to 986,005.80, 1,478,144.70 and 669,436.20

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Solution

The fourth proportional to 986,005.80, 1,478,144.70 and 669,436.20 is: 1,003,567.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,005.80 : 1,478,144.70 = 669,436.20 : x
  2. Step 2: Convert to fraction form
    986,005.80/1,478,144.70 = 669,436.20/x
  3. Step 3: Cross multiply
    986,005.80x = 1,478,144.70 × 669,436.20
  4. Step 4: Simplify right side
    986,005.80x = 989,523,571,018.14
  5. Step 5: Solve for x
    x = 989,523,571,018.14/986,005.80
  6. Step 6: Final answer
    x = 1,003,567.70

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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.