Home / 787,339,715.40-1,181,009,573.10-424,542,659.40

Finding the Fourth Proportional to 787,339,715.40, 1,181,009,573.10 and 424,542,659.40

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Solution

The fourth proportional to 787,339,715.40, 1,181,009,573.10 and 424,542,659.40 is: 636,813,989.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,339,715.40 : 1,181,009,573.10 = 424,542,659.40 : x
  2. Step 2: Convert to fraction form
    787,339,715.40/1,181,009,573.10 = 424,542,659.40/x
  3. Step 3: Cross multiply
    787,339,715.40x = 1,181,009,573.10 × 424,542,659.40
  4. Step 4: Simplify right side
    787,339,715.40x = 501,388,944,940,732,608
  5. Step 5: Solve for x
    x = 501,388,944,940,732,608/787,339,715.40
  6. Step 6: Final answer
    x = 636,813,989.10

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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.