Home / 1,231,292,199.23-1,699,184,155.64-666,777,699.71

Finding the Fourth Proportional to 1,231,292,199.23, 1,699,184,155.64 and 666,777,699.71

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Solution

The fourth proportional to 1,231,292,199.23, 1,699,184,155.64 and 666,777,699.71 is: 920,153,724.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,292,199.23 : 1,699,184,155.64 = 666,777,699.71 : x
  2. Step 2: Convert to fraction form
    1,231,292,199.23/1,699,184,155.64 = 666,777,699.71/x
  3. Step 3: Cross multiply
    1,231,292,199.23x = 1,699,184,155.64 × 666,777,699.71
  4. Step 4: Simplify right side
    1,231,292,199.23x = 1,132,978,102,669,488,128
  5. Step 5: Solve for x
    x = 1,132,978,102,669,488,128/1,231,292,199.23
  6. Step 6: Final answer
    x = 920,153,724.18

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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.