Home / 687,784.80-1,029,708.90-609,052.80

Finding the Fourth Proportional to 687,784.80, 1,029,708.90 and 609,052.80

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Solution

The fourth proportional to 687,784.80, 1,029,708.90 and 609,052.80 is: 911,836.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,784.80 : 1,029,708.90 = 609,052.80 : x
  2. Step 2: Convert to fraction form
    687,784.80/1,029,708.90 = 609,052.80/x
  3. Step 3: Cross multiply
    687,784.80x = 1,029,708.90 × 609,052.80
  4. Step 4: Simplify right side
    687,784.80x = 627,147,088,729.92
  5. Step 5: Solve for x
    x = 627,147,088,729.92/687,784.80
  6. Step 6: Final answer
    x = 911,836.21

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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.