Home / 500,325.18-690,435.95-279,564.23

Finding the Fourth Proportional to 500,325.18, 690,435.95 and 279,564.23

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Solution

The fourth proportional to 500,325.18, 690,435.95 and 279,564.23 is: 385,791.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,325.18 : 690,435.95 = 279,564.23 : x
  2. Step 2: Convert to fraction form
    500,325.18/690,435.95 = 279,564.23/x
  3. Step 3: Cross multiply
    500,325.18x = 690,435.95 × 279,564.23
  4. Step 4: Simplify right side
    500,325.18x = 193,021,195,054.34
  5. Step 5: Solve for x
    x = 193,021,195,054.34/500,325.18
  6. Step 6: Final answer
    x = 385,791.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.