Home / 778,463.66-1,073,325.38-640,159.26

Finding the Fourth Proportional to 778,463.66, 1,073,325.38 and 640,159.26

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Solution

The fourth proportional to 778,463.66, 1,073,325.38 and 640,159.26 is: 882,634.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,463.66 : 1,073,325.38 = 640,159.26 : x
  2. Step 2: Convert to fraction form
    778,463.66/1,073,325.38 = 640,159.26/x
  3. Step 3: Cross multiply
    778,463.66x = 1,073,325.38 × 640,159.26
  4. Step 4: Simplify right side
    778,463.66x = 687,099,181,000.02
  5. Step 5: Solve for x
    x = 687,099,181,000.02/778,463.66
  6. Step 6: Final answer
    x = 882,634.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.