Home / 719,310.60-1,077,410.70-640,513.80

Finding the Fourth Proportional to 719,310.60, 1,077,410.70 and 640,513.80

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Solution

The fourth proportional to 719,310.60, 1,077,410.70 and 640,513.80 is: 959,385.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,310.60 : 1,077,410.70 = 640,513.80 : x
  2. Step 2: Convert to fraction form
    719,310.60/1,077,410.70 = 640,513.80/x
  3. Step 3: Cross multiply
    719,310.60x = 1,077,410.70 × 640,513.80
  4. Step 4: Simplify right side
    719,310.60x = 690,096,421,617.66
  5. Step 5: Solve for x
    x = 690,096,421,617.66/719,310.60
  6. Step 6: Final answer
    x = 959,385.86

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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.