Home / 1,237,646.82-1,707,921.78-686,359.32

Finding the Fourth Proportional to 1,237,646.82, 1,707,921.78 and 686,359.32

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Solution

The fourth proportional to 1,237,646.82, 1,707,921.78 and 686,359.32 is: 947,158.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,237,646.82 : 1,707,921.78 = 686,359.32 : x
  2. Step 2: Convert to fraction form
    1,237,646.82/1,707,921.78 = 686,359.32/x
  3. Step 3: Cross multiply
    1,237,646.82x = 1,707,921.78 × 686,359.32
  4. Step 4: Simplify right side
    1,237,646.82x = 1,172,248,031,533.99
  5. Step 5: Solve for x
    x = 1,172,248,031,533.99/1,237,646.82
  6. Step 6: Final answer
    x = 947,158.76

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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.