Home / 816,133.80-1,223,325.90-310,499.40

Finding the Fourth Proportional to 816,133.80, 1,223,325.90 and 310,499.40

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Solution

The fourth proportional to 816,133.80, 1,223,325.90 and 310,499.40 is: 465,416.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,133.80 : 1,223,325.90 = 310,499.40 : x
  2. Step 2: Convert to fraction form
    816,133.80/1,223,325.90 = 310,499.40/x
  3. Step 3: Cross multiply
    816,133.80x = 1,223,325.90 × 310,499.40
  4. Step 4: Simplify right side
    816,133.80x = 379,841,957,954.46
  5. Step 5: Solve for x
    x = 379,841,957,954.46/816,133.80
  6. Step 6: Final answer
    x = 465,416.28

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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.