Home / 1,237,643.82-1,707,917.64-686,356.32

Finding the Fourth Proportional to 1,237,643.82, 1,707,917.64 and 686,356.32

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Solution

The fourth proportional to 1,237,643.82, 1,707,917.64 and 686,356.32 is: 947,154.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,237,643.82 : 1,707,917.64 = 686,356.32 : x
  2. Step 2: Convert to fraction form
    1,237,643.82/1,707,917.64 = 686,356.32/x
  3. Step 3: Cross multiply
    1,237,643.82x = 1,707,917.64 × 686,356.32
  4. Step 4: Simplify right side
    1,237,643.82x = 1,172,240,066,253.48
  5. Step 5: Solve for x
    x = 1,172,240,066,253.48/1,237,643.82
  6. Step 6: Final answer
    x = 947,154.62

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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.