Home / 807,801.64-1,210,373.79-640,397.86

Finding the Fourth Proportional to 807,801.64, 1,210,373.79 and 640,397.86

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Solution

The fourth proportional to 807,801.64, 1,210,373.79 and 640,397.86 is: 959,543.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,801.64 : 1,210,373.79 = 640,397.86 : x
  2. Step 2: Convert to fraction form
    807,801.64/1,210,373.79 = 640,397.86/x
  3. Step 3: Cross multiply
    807,801.64x = 1,210,373.79 × 640,397.86
  4. Step 4: Simplify right side
    807,801.64x = 775,120,784,916.09
  5. Step 5: Solve for x
    x = 775,120,784,916.09/807,801.64
  6. Step 6: Final answer
    x = 959,543.47

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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.