Home / 839,809,795.80-1,259,714,693.70-409,828,099.80

Finding the Fourth Proportional to 839,809,795.80, 1,259,714,693.70 and 409,828,099.80

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Solution

The fourth proportional to 839,809,795.80, 1,259,714,693.70 and 409,828,099.80 is: 614,742,149.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,809,795.80 : 1,259,714,693.70 = 409,828,099.80 : x
  2. Step 2: Convert to fraction form
    839,809,795.80/1,259,714,693.70 = 409,828,099.80/x
  3. Step 3: Cross multiply
    839,809,795.80x = 1,259,714,693.70 × 409,828,099.80
  4. Step 4: Simplify right side
    839,809,795.80x = 516,266,479,209,210,048
  5. Step 5: Solve for x
    x = 516,266,479,209,210,048/839,809,795.80
  6. Step 6: Final answer
    x = 614,742,149.70

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1.5x scale

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.