Home / 986,212.80-1,478,455.20-669,643.20

Finding the Fourth Proportional to 986,212.80, 1,478,455.20 and 669,643.20

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Solution

The fourth proportional to 986,212.80, 1,478,455.20 and 669,643.20 is: 1,003,878.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,212.80 : 1,478,455.20 = 669,643.20 : x
  2. Step 2: Convert to fraction form
    986,212.80/1,478,455.20 = 669,643.20/x
  3. Step 3: Cross multiply
    986,212.80x = 1,478,455.20 × 669,643.20
  4. Step 4: Simplify right side
    986,212.80x = 990,037,471,184.64
  5. Step 5: Solve for x
    x = 990,037,471,184.64/986,212.80
  6. Step 6: Final answer
    x = 1,003,878.14

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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.