Home / 839,810,090.80-1,259,715,136.20-409,828,394.80

Finding the Fourth Proportional to 839,810,090.80, 1,259,715,136.20 and 409,828,394.80

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Solution

The fourth proportional to 839,810,090.80, 1,259,715,136.20 and 409,828,394.80 is: 614,742,592.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,810,090.80 : 1,259,715,136.20 = 409,828,394.80 : x
  2. Step 2: Convert to fraction form
    839,810,090.80/1,259,715,136.20 = 409,828,394.80/x
  3. Step 3: Cross multiply
    839,810,090.80x = 1,259,715,136.20 × 409,828,394.80
  4. Step 4: Simplify right side
    839,810,090.80x = 516,267,032,174,109,376
  5. Step 5: Solve for x
    x = 516,267,032,174,109,376/839,810,090.80
  6. Step 6: Final answer
    x = 614,742,592.20

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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.