Home / 686,882,629.60-1,030,323,944.40-411,383,615.20

Finding the Fourth Proportional to 686,882,629.60, 1,030,323,944.40 and 411,383,615.20

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Solution

The fourth proportional to 686,882,629.60, 1,030,323,944.40 and 411,383,615.20 is: 617,075,422.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,882,629.60 : 1,030,323,944.40 = 411,383,615.20 : x
  2. Step 2: Convert to fraction form
    686,882,629.60/1,030,323,944.40 = 411,383,615.20/x
  3. Step 3: Cross multiply
    686,882,629.60x = 1,030,323,944.40 × 411,383,615.20
  4. Step 4: Simplify right side
    686,882,629.60x = 423,858,389,074,395,776
  5. Step 5: Solve for x
    x = 423,858,389,074,395,776/686,882,629.60
  6. Step 6: Final answer
    x = 617,075,422.80

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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.