Home / 709,724.60-1,064,586.90-639,740.60

Finding the Fourth Proportional to 709,724.60, 1,064,586.90 and 639,740.60

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Solution

The fourth proportional to 709,724.60, 1,064,586.90 and 639,740.60 is: 959,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,724.60 : 1,064,586.90 = 639,740.60 : x
  2. Step 2: Convert to fraction form
    709,724.60/1,064,586.90 = 639,740.60/x
  3. Step 3: Cross multiply
    709,724.60x = 1,064,586.90 × 639,740.60
  4. Step 4: Simplify right side
    709,724.60x = 681,059,462,158.14
  5. Step 5: Solve for x
    x = 681,059,462,158.14/709,724.60
  6. Step 6: Final answer
    x = 959,610.90

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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.