Home / 939,433.28-1,409,133.42-650,978.91

Finding the Fourth Proportional to 939,433.28, 1,409,133.42 and 650,978.91

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Solution

The fourth proportional to 939,433.28, 1,409,133.42 and 650,978.91 is: 976,456.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,433.28 : 1,409,133.42 = 650,978.91 : x
  2. Step 2: Convert to fraction form
    939,433.28/1,409,133.42 = 650,978.91/x
  3. Step 3: Cross multiply
    939,433.28x = 1,409,133.42 × 650,978.91
  4. Step 4: Simplify right side
    939,433.28x = 917,316,137,796.17
  5. Step 5: Solve for x
    x = 917,316,137,796.17/939,433.28
  6. Step 6: Final answer
    x = 976,456.94

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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.