Home / 1,389,841,390.40-2,084,760,412.80-354,702,382.40

Finding the Fourth Proportional to 1,389,841,390.40, 2,084,760,412.80 and 354,702,382.40

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Solution

The fourth proportional to 1,389,841,390.40, 2,084,760,412.80 and 354,702,382.40 is: 532,053,146.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,841,390.40 : 2,084,760,412.80 = 354,702,382.40 : x
  2. Step 2: Convert to fraction form
    1,389,841,390.40/2,084,760,412.80 = 354,702,382.40/x
  3. Step 3: Cross multiply
    1,389,841,390.40x = 2,084,760,412.80 × 354,702,382.40
  4. Step 4: Simplify right side
    1,389,841,390.40x = 739,469,485,153,367,424
  5. Step 5: Solve for x
    x = 739,469,485,153,367,424/1,389,841,390.40
  6. Step 6: Final answer
    x = 532,053,146.68

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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.