Home / 992,461.20-1,489,080.60-393,320.40

Finding the Fourth Proportional to 992,461.20, 1,489,080.60 and 393,320.40

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Solution

The fourth proportional to 992,461.20, 1,489,080.60 and 393,320.40 is: 590,134.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,461.20 : 1,489,080.60 = 393,320.40 : x
  2. Step 2: Convert to fraction form
    992,461.20/1,489,080.60 = 393,320.40/x
  3. Step 3: Cross multiply
    992,461.20x = 1,489,080.60 × 393,320.40
  4. Step 4: Simplify right side
    992,461.20x = 585,685,777,224.24
  5. Step 5: Solve for x
    x = 585,685,777,224.24/992,461.20
  6. Step 6: Final answer
    x = 590,134.68

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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.