Home / 1,211,770,698.48-1,672,318,503.72-668,608,987.86

Finding the Fourth Proportional to 1,211,770,698.48, 1,672,318,503.72 and 668,608,987.86

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Solution

The fourth proportional to 1,211,770,698.48, 1,672,318,503.72 and 668,608,987.86 is: 922,721,752.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,770,698.48 : 1,672,318,503.72 = 668,608,987.86 : x
  2. Step 2: Convert to fraction form
    1,211,770,698.48/1,672,318,503.72 = 668,608,987.86/x
  3. Step 3: Cross multiply
    1,211,770,698.48x = 1,672,318,503.72 × 668,608,987.86
  4. Step 4: Simplify right side
    1,211,770,698.48x = 1,118,127,182,151,778,944
  5. Step 5: Solve for x
    x = 1,118,127,182,151,778,944/1,211,770,698.48
  6. Step 6: Final answer
    x = 922,721,752.19

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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.