Home / 787,339,712.40-1,181,009,568.60-424,542,656.40

Finding the Fourth Proportional to 787,339,712.40, 1,181,009,568.60 and 424,542,656.40

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Solution

The fourth proportional to 787,339,712.40, 1,181,009,568.60 and 424,542,656.40 is: 636,813,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,339,712.40 : 1,181,009,568.60 = 424,542,656.40 : x
  2. Step 2: Convert to fraction form
    787,339,712.40/1,181,009,568.60 = 424,542,656.40/x
  3. Step 3: Cross multiply
    787,339,712.40x = 1,181,009,568.60 × 424,542,656.40
  4. Step 4: Simplify right side
    787,339,712.40x = 501,388,939,487,261,952
  5. Step 5: Solve for x
    x = 501,388,939,487,261,952/787,339,712.40
  6. Step 6: Final answer
    x = 636,813,984.60

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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.