Home / 479,534.36-719,436.40-209,686.23

Finding the Fourth Proportional to 479,534.36, 719,436.40 and 209,686.23

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Solution

The fourth proportional to 479,534.36, 719,436.40 and 209,686.23 is: 314,588.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,534.36 : 719,436.40 = 209,686.23 : x
  2. Step 2: Convert to fraction form
    479,534.36/719,436.40 = 209,686.23/x
  3. Step 3: Cross multiply
    479,534.36x = 719,436.40 × 209,686.23
  4. Step 4: Simplify right side
    479,534.36x = 150,855,905,916.56
  5. Step 5: Solve for x
    x = 150,855,905,916.56/479,534.36
  6. Step 6: Final answer
    x = 314,588.32

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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.