Home / 910,108,716.28-1,255,950,008.94-492,421,001.68

Finding the Fourth Proportional to 910,108,716.28, 1,255,950,008.94 and 492,421,001.68

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Solution

The fourth proportional to 910,108,716.28, 1,255,950,008.94 and 492,421,001.68 is: 679,540,971.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,108,716.28 : 1,255,950,008.94 = 492,421,001.68 : x
  2. Step 2: Convert to fraction form
    910,108,716.28/1,255,950,008.94 = 492,421,001.68/x
  3. Step 3: Cross multiply
    910,108,716.28x = 1,255,950,008.94 × 492,421,001.68
  4. Step 4: Simplify right side
    910,108,716.28x = 618,456,161,462,239,744
  5. Step 5: Solve for x
    x = 618,456,161,462,239,744/910,108,716.28
  6. Step 6: Final answer
    x = 679,540,971.75

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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.