Home / 885,188,154.42-1,221,666,770.21-503,802,917.63

Finding the Fourth Proportional to 885,188,154.42, 1,221,666,770.21 and 503,802,917.63

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Solution

The fourth proportional to 885,188,154.42, 1,221,666,770.21 and 503,802,917.63 is: 695,308,991.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,188,154.42 : 1,221,666,770.21 = 503,802,917.63 : x
  2. Step 2: Convert to fraction form
    885,188,154.42/1,221,666,770.21 = 503,802,917.63/x
  3. Step 3: Cross multiply
    885,188,154.42x = 1,221,666,770.21 × 503,802,917.63
  4. Step 4: Simplify right side
    885,188,154.42x = 615,479,283,194,789,376
  5. Step 5: Solve for x
    x = 615,479,283,194,789,376/885,188,154.42
  6. Step 6: Final answer
    x = 695,308,991.79

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Half scale
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Double scale
Find fourth proportional to 885,188,155.42, 1,221,666,771.59 and 503,802,918.63
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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.