Home / 659,868.81-989,791.06-210,586.11

Finding the Fourth Proportional to 659,868.81, 989,791.06 and 210,586.11

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Solution

The fourth proportional to 659,868.81, 989,791.06 and 210,586.11 is: 315,875.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,868.81 : 989,791.06 = 210,586.11 : x
  2. Step 2: Convert to fraction form
    659,868.81/989,791.06 = 210,586.11/x
  3. Step 3: Cross multiply
    659,868.81x = 989,791.06 × 210,586.11
  4. Step 4: Simplify right side
    659,868.81x = 208,436,249,038.18
  5. Step 5: Solve for x
    x = 208,436,249,038.18/659,868.81
  6. Step 6: Final answer
    x = 315,875.29

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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.