Home / 1,375,413.20-2,063,119.80-428,776.40

Finding the Fourth Proportional to 1,375,413.20, 2,063,119.80 and 428,776.40

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Solution

The fourth proportional to 1,375,413.20, 2,063,119.80 and 428,776.40 is: 643,164.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375,413.20 : 2,063,119.80 = 428,776.40 : x
  2. Step 2: Convert to fraction form
    1,375,413.20/2,063,119.80 = 428,776.40/x
  3. Step 3: Cross multiply
    1,375,413.20x = 2,063,119.80 × 428,776.40
  4. Step 4: Simplify right side
    1,375,413.20x = 884,617,080,612.72
  5. Step 5: Solve for x
    x = 884,617,080,612.72/1,375,413.20
  6. Step 6: Final answer
    x = 643,164.60

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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.