Home / 986,284.80-1,478,563.20-669,715.20

Finding the Fourth Proportional to 986,284.80, 1,478,563.20 and 669,715.20

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Solution

The fourth proportional to 986,284.80, 1,478,563.20 and 669,715.20 is: 1,003,986.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,284.80 : 1,478,563.20 = 669,715.20 : x
  2. Step 2: Convert to fraction form
    986,284.80/1,478,563.20 = 669,715.20/x
  3. Step 3: Cross multiply
    986,284.80x = 1,478,563.20 × 669,715.20
  4. Step 4: Simplify right side
    986,284.80x = 990,216,249,200.64
  5. Step 5: Solve for x
    x = 990,216,249,200.64/986,284.80
  6. Step 6: Final answer
    x = 1,003,986.12

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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.