Home / 720,002.40-1,080,003.60-384,079.20

Finding the Fourth Proportional to 720,002.40, 1,080,003.60 and 384,079.20

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Solution

The fourth proportional to 720,002.40, 1,080,003.60 and 384,079.20 is: 576,118.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,002.40 : 1,080,003.60 = 384,079.20 : x
  2. Step 2: Convert to fraction form
    720,002.40/1,080,003.60 = 384,079.20/x
  3. Step 3: Cross multiply
    720,002.40x = 1,080,003.60 × 384,079.20
  4. Step 4: Simplify right side
    720,002.40x = 414,806,918,685.12
  5. Step 5: Solve for x
    x = 414,806,918,685.12/720,002.40
  6. Step 6: Final answer
    x = 576,118.80

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1.5x scale

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.