Home / 1,320,290,638.28-1,980,501,739.50-502,466,323.40

Finding the Fourth Proportional to 1,320,290,638.28, 1,980,501,739.50 and 502,466,323.40

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Solution

The fourth proportional to 1,320,290,638.28, 1,980,501,739.50 and 502,466,323.40 is: 753,724,519.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,290,638.28 : 1,980,501,739.50 = 502,466,323.40 : x
  2. Step 2: Convert to fraction form
    1,320,290,638.28/1,980,501,739.50 = 502,466,323.40/x
  3. Step 3: Cross multiply
    1,320,290,638.28x = 1,980,501,739.50 × 502,466,323.40
  4. Step 4: Simplify right side
    1,320,290,638.28x = 995,135,427,533,869,568
  5. Step 5: Solve for x
    x = 995,135,427,533,869,568/1,320,290,638.28
  6. Step 6: Final answer
    x = 753,724,519.95

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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.