Home / 647,387,413.20-971,081,119.80-238,390,419.60

Finding the Fourth Proportional to 647,387,413.20, 971,081,119.80 and 238,390,419.60

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Solution

The fourth proportional to 647,387,413.20, 971,081,119.80 and 238,390,419.60 is: 357,585,629.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,387,413.20 : 971,081,119.80 = 238,390,419.60 : x
  2. Step 2: Convert to fraction form
    647,387,413.20/971,081,119.80 = 238,390,419.60/x
  3. Step 3: Cross multiply
    647,387,413.20x = 971,081,119.80 × 238,390,419.60
  4. Step 4: Simplify right side
    647,387,413.20x = 231,496,435,614,759,840
  5. Step 5: Solve for x
    x = 231,496,435,614,759,840/647,387,413.20
  6. Step 6: Final answer
    x = 357,585,629.40

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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.