Home / 839,809,968.80-1,259,714,953.20-409,828,272.80

Finding the Fourth Proportional to 839,809,968.80, 1,259,714,953.20 and 409,828,272.80

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Solution

The fourth proportional to 839,809,968.80, 1,259,714,953.20 and 409,828,272.80 is: 614,742,409.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,809,968.80 : 1,259,714,953.20 = 409,828,272.80 : x
  2. Step 2: Convert to fraction form
    839,809,968.80/1,259,714,953.20 = 409,828,272.80/x
  3. Step 3: Cross multiply
    839,809,968.80x = 1,259,714,953.20 × 409,828,272.80
  4. Step 4: Simplify right side
    839,809,968.80x = 516,266,803,490,288,896
  5. Step 5: Solve for x
    x = 516,266,803,490,288,896/839,809,968.80
  6. Step 6: Final answer
    x = 614,742,409.20

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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.