Home / 771,218.60-1,156,136.70-687,237.80

Finding the Fourth Proportional to 771,218.60, 1,156,136.70 and 687,237.80

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Solution

The fourth proportional to 771,218.60, 1,156,136.70 and 687,237.80 is: 1,030,240.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,218.60 : 1,156,136.70 = 687,237.80 : x
  2. Step 2: Convert to fraction form
    771,218.60/1,156,136.70 = 687,237.80/x
  3. Step 3: Cross multiply
    771,218.60x = 1,156,136.70 × 687,237.80
  4. Step 4: Simplify right side
    771,218.60x = 794,540,842,207.26
  5. Step 5: Solve for x
    x = 794,540,842,207.26/771,218.60
  6. Step 6: Final answer
    x = 1,030,240.77

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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.