Home / 1,320,290,637.78-1,980,501,738.75-502,466,322.90

Finding the Fourth Proportional to 1,320,290,637.78, 1,980,501,738.75 and 502,466,322.90

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Solution

The fourth proportional to 1,320,290,637.78, 1,980,501,738.75 and 502,466,322.90 is: 753,724,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,290,637.78 : 1,980,501,738.75 = 502,466,322.90 : x
  2. Step 2: Convert to fraction form
    1,320,290,637.78/1,980,501,738.75 = 502,466,322.90/x
  3. Step 3: Cross multiply
    1,320,290,637.78x = 1,980,501,738.75 × 502,466,322.90
  4. Step 4: Simplify right side
    1,320,290,637.78x = 995,135,426,166,768,896
  5. Step 5: Solve for x
    x = 995,135,426,166,768,896/1,320,290,637.78
  6. Step 6: Final answer
    x = 753,724,519.20

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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.