Home / 388,987,859,754.28-536,820,023,131.14-215,372,997,811

Finding the Fourth Proportional to 388,987,859,754.28, 536,820,023,131.14 and 215,372,997,811

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Solution

The fourth proportional to 388,987,859,754.28, 536,820,023,131.14 and 215,372,997,811 is: 297,224,025,808.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,987,859,754.28 : 536,820,023,131.14 = 215,372,997,811 : x
  2. Step 2: Convert to fraction form
    388,987,859,754.28/536,820,023,131.14 = 215,372,997,811/x
  3. Step 3: Cross multiply
    388,987,859,754.28x = 536,820,023,131.14 × 215,372,997,811
  4. Step 4: Simplify right side
    388,987,859,754.28x = 115,616,537,666,723,982,082,048
  5. Step 5: Solve for x
    x = 115,616,537,666,723,982,082,048/388,987,859,754.28
  6. Step 6: Final answer
    x = 297,224,025,808.31

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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.