Home / 1,085,609.20-1,628,413.80-686,700.40

Finding the Fourth Proportional to 1,085,609.20, 1,628,413.80 and 686,700.40

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Solution

The fourth proportional to 1,085,609.20, 1,628,413.80 and 686,700.40 is: 1,030,050.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085,609.20 : 1,628,413.80 = 686,700.40 : x
  2. Step 2: Convert to fraction form
    1,085,609.20/1,628,413.80 = 686,700.40/x
  3. Step 3: Cross multiply
    1,085,609.20x = 1,628,413.80 × 686,700.40
  4. Step 4: Simplify right side
    1,085,609.20x = 1,118,232,407,825.52
  5. Step 5: Solve for x
    x = 1,118,232,407,825.52/1,085,609.20
  6. Step 6: Final answer
    x = 1,030,050.60

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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.