Home / 839,809,931.80-1,259,714,897.70-409,828,235.80

Finding the Fourth Proportional to 839,809,931.80, 1,259,714,897.70 and 409,828,235.80

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Solution

The fourth proportional to 839,809,931.80, 1,259,714,897.70 and 409,828,235.80 is: 614,742,353.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,809,931.80 : 1,259,714,897.70 = 409,828,235.80 : x
  2. Step 2: Convert to fraction form
    839,809,931.80/1,259,714,897.70 = 409,828,235.80/x
  3. Step 3: Cross multiply
    839,809,931.80x = 1,259,714,897.70 × 409,828,235.80
  4. Step 4: Simplify right side
    839,809,931.80x = 516,266,734,135,368,512
  5. Step 5: Solve for x
    x = 516,266,734,135,368,512/839,809,931.80
  6. Step 6: Final answer
    x = 614,742,353.70

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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.