Home / 1,247,130.76-1,719,892.72-817,254.76

Finding the Fourth Proportional to 1,247,130.76, 1,719,892.72 and 817,254.76

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Solution

The fourth proportional to 1,247,130.76, 1,719,892.72 and 817,254.76 is: 1,127,059.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,130.76 : 1,719,892.72 = 817,254.76 : x
  2. Step 2: Convert to fraction form
    1,247,130.76/1,719,892.72 = 817,254.76/x
  3. Step 3: Cross multiply
    1,247,130.76x = 1,719,892.72 × 817,254.76
  4. Step 4: Simplify right side
    1,247,130.76x = 1,405,590,512,109.35
  5. Step 5: Solve for x
    x = 1,405,590,512,109.35/1,247,130.76
  6. Step 6: Final answer
    x = 1,127,059.45

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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.