Home / 724,921,347.60-1,087,382,021.40-449,422,333.20

Finding the Fourth Proportional to 724,921,347.60, 1,087,382,021.40 and 449,422,333.20

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Solution

The fourth proportional to 724,921,347.60, 1,087,382,021.40 and 449,422,333.20 is: 674,133,499.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,921,347.60 : 1,087,382,021.40 = 449,422,333.20 : x
  2. Step 2: Convert to fraction form
    724,921,347.60/1,087,382,021.40 = 449,422,333.20/x
  3. Step 3: Cross multiply
    724,921,347.60x = 1,087,382,021.40 × 449,422,333.20
  4. Step 4: Simplify right side
    724,921,347.60x = 488,693,765,137,320,384
  5. Step 5: Solve for x
    x = 488,693,765,137,320,384/724,921,347.60
  6. Step 6: Final answer
    x = 674,133,499.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.