Home / 990,012.20-1,485,018.30-712,149.80

Finding the Fourth Proportional to 990,012.20, 1,485,018.30 and 712,149.80

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Solution

The fourth proportional to 990,012.20, 1,485,018.30 and 712,149.80 is: 1,068,224.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,012.20 : 1,485,018.30 = 712,149.80 : x
  2. Step 2: Convert to fraction form
    990,012.20/1,485,018.30 = 712,149.80/x
  3. Step 3: Cross multiply
    990,012.20x = 1,485,018.30 × 712,149.80
  4. Step 4: Simplify right side
    990,012.20x = 1,057,555,485,341.34
  5. Step 5: Solve for x
    x = 1,057,555,485,341.34/990,012.20
  6. Step 6: Final answer
    x = 1,068,224.70

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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.