Home / 987,148.80-1,479,859.20-670,579.20

Finding the Fourth Proportional to 987,148.80, 1,479,859.20 and 670,579.20

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Solution

The fourth proportional to 987,148.80, 1,479,859.20 and 670,579.20 is: 1,005,281.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,148.80 : 1,479,859.20 = 670,579.20 : x
  2. Step 2: Convert to fraction form
    987,148.80/1,479,859.20 = 670,579.20/x
  3. Step 3: Cross multiply
    987,148.80x = 1,479,859.20 × 670,579.20
  4. Step 4: Simplify right side
    987,148.80x = 992,362,798,448.64
  5. Step 5: Solve for x
    x = 992,362,798,448.64/987,148.80
  6. Step 6: Final answer
    x = 1,005,281.88

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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.