Home / 1,231,292,197.72-1,699,184,153.57-666,777,698.21

Finding the Fourth Proportional to 1,231,292,197.72, 1,699,184,153.57 and 666,777,698.21

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Solution

The fourth proportional to 1,231,292,197.72, 1,699,184,153.57 and 666,777,698.21 is: 920,153,722.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,292,197.72 : 1,699,184,153.57 = 666,777,698.21 : x
  2. Step 2: Convert to fraction form
    1,231,292,197.72/1,699,184,153.57 = 666,777,698.21/x
  3. Step 3: Cross multiply
    1,231,292,197.72x = 1,699,184,153.57 × 666,777,698.21
  4. Step 4: Simplify right side
    1,231,292,197.72x = 1,132,978,098,750,403,200
  5. Step 5: Solve for x
    x = 1,132,978,098,750,403,200/1,231,292,197.72
  6. Step 6: Final answer
    x = 920,153,722.12

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Double scale
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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.