Home / 990,043.20-1,485,064.80-712,180.80

Finding the Fourth Proportional to 990,043.20, 1,485,064.80 and 712,180.80

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Solution

The fourth proportional to 990,043.20, 1,485,064.80 and 712,180.80 is: 1,068,271.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,043.20 : 1,485,064.80 = 712,180.80 : x
  2. Step 2: Convert to fraction form
    990,043.20/1,485,064.80 = 712,180.80/x
  3. Step 3: Cross multiply
    990,043.20x = 1,485,064.80 × 712,180.80
  4. Step 4: Simplify right side
    990,043.20x = 1,057,634,637,315.84
  5. Step 5: Solve for x
    x = 1,057,634,637,315.84/990,043.20
  6. Step 6: Final answer
    x = 1,068,271.20

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Similar ratio
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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.