Home / 839,809,805.80-1,259,714,708.70-409,828,109.80

Finding the Fourth Proportional to 839,809,805.80, 1,259,714,708.70 and 409,828,109.80

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Solution

The fourth proportional to 839,809,805.80, 1,259,714,708.70 and 409,828,109.80 is: 614,742,164.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,809,805.80 : 1,259,714,708.70 = 409,828,109.80 : x
  2. Step 2: Convert to fraction form
    839,809,805.80/1,259,714,708.70 = 409,828,109.80/x
  3. Step 3: Cross multiply
    839,809,805.80x = 1,259,714,708.70 × 409,828,109.80
  4. Step 4: Simplify right side
    839,809,805.80x = 516,266,497,953,778,624
  5. Step 5: Solve for x
    x = 516,266,497,953,778,624/839,809,805.80
  6. Step 6: Final answer
    x = 614,742,164.70

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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.