Home / 1,287,446,027.48-1,776,554,082.78-722,820,633.55

Finding the Fourth Proportional to 1,287,446,027.48, 1,776,554,082.78 and 722,820,633.55

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Solution

The fourth proportional to 1,287,446,027.48, 1,776,554,082.78 and 722,820,633.55 is: 997,424,296.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,446,027.48 : 1,776,554,082.78 = 722,820,633.55 : x
  2. Step 2: Convert to fraction form
    1,287,446,027.48/1,776,554,082.78 = 722,820,633.55/x
  3. Step 3: Cross multiply
    1,287,446,027.48x = 1,776,554,082.78 × 722,820,633.55
  4. Step 4: Simplify right side
    1,287,446,027.48x = 1,284,129,947,650,878,720
  5. Step 5: Solve for x
    x = 1,284,129,947,650,878,720/1,287,446,027.48
  6. Step 6: Final answer
    x = 997,424,296.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.