Home / 876,562,073.25-1,209,693,685.73-485,421,497.25

Finding the Fourth Proportional to 876,562,073.25, 1,209,693,685.73 and 485,421,497.25

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Solution

The fourth proportional to 876,562,073.25, 1,209,693,685.73 and 485,421,497.25 is: 669,902,723.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,562,073.25 : 1,209,693,685.73 = 485,421,497.25 : x
  2. Step 2: Convert to fraction form
    876,562,073.25/1,209,693,685.73 = 485,421,497.25/x
  3. Step 3: Cross multiply
    876,562,073.25x = 1,209,693,685.73 × 485,421,497.25
  4. Step 4: Simplify right side
    876,562,073.25x = 587,211,320,138,500,352
  5. Step 5: Solve for x
    x = 587,211,320,138,500,352/876,562,073.25
  6. Step 6: Final answer
    x = 669,902,723.44

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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.