Home / 990,015.70-1,485,023.55-712,153.30

Finding the Fourth Proportional to 990,015.70, 1,485,023.55 and 712,153.30

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Solution

The fourth proportional to 990,015.70, 1,485,023.55 and 712,153.30 is: 1,068,229.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,015.70 : 1,485,023.55 = 712,153.30 : x
  2. Step 2: Convert to fraction form
    990,015.70/1,485,023.55 = 712,153.30/x
  3. Step 3: Cross multiply
    990,015.70x = 1,485,023.55 × 712,153.30
  4. Step 4: Simplify right side
    990,015.70x = 1,057,564,421,710.22
  5. Step 5: Solve for x
    x = 1,057,564,421,710.22/990,015.70
  6. Step 6: Final answer
    x = 1,068,229.95

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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.