Home / 1,389,000.20-2,081,945.10-790,248.20

Finding the Fourth Proportional to 1,389,000.20, 2,081,945.10 and 790,248.20

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Solution

The fourth proportional to 1,389,000.20, 2,081,945.10 and 790,248.20 is: 1,184,487.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,000.20 : 2,081,945.10 = 790,248.20 : x
  2. Step 2: Convert to fraction form
    1,389,000.20/2,081,945.10 = 790,248.20/x
  3. Step 3: Cross multiply
    1,389,000.20x = 2,081,945.10 × 790,248.20
  4. Step 4: Simplify right side
    1,389,000.20x = 1,645,253,367,773.82
  5. Step 5: Solve for x
    x = 1,645,253,367,773.82/1,389,000.20
  6. Step 6: Final answer
    x = 1,184,487.50

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Double scale
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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.