Home / 648,121.80-971,016.30-554,809.80

Finding the Fourth Proportional to 648,121.80, 971,016.30 and 554,809.80

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Solution

The fourth proportional to 648,121.80, 971,016.30 and 554,809.80 is: 831,216.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,121.80 : 971,016.30 = 554,809.80 : x
  2. Step 2: Convert to fraction form
    648,121.80/971,016.30 = 554,809.80/x
  3. Step 3: Cross multiply
    648,121.80x = 971,016.30 × 554,809.80
  4. Step 4: Simplify right side
    648,121.80x = 538,729,359,199.74
  5. Step 5: Solve for x
    x = 538,729,359,199.74/648,121.80
  6. Step 6: Final answer
    x = 831,216.23

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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.