Home / 745,274.86-1,028,497.80-405,761.74

Finding the Fourth Proportional to 745,274.86, 1,028,497.80 and 405,761.74

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Solution

The fourth proportional to 745,274.86, 1,028,497.80 and 405,761.74 is: 559,961.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,274.86 : 1,028,497.80 = 405,761.74 : x
  2. Step 2: Convert to fraction form
    745,274.86/1,028,497.80 = 405,761.74/x
  3. Step 3: Cross multiply
    745,274.86x = 1,028,497.80 × 405,761.74
  4. Step 4: Simplify right side
    745,274.86x = 417,325,056,914.17
  5. Step 5: Solve for x
    x = 417,325,056,914.17/745,274.86
  6. Step 6: Final answer
    x = 559,961.27

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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.