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Finding the Fourth Proportional to 672,955.68, 928,645.99 and 401,017.49

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Solution

The fourth proportional to 672,955.68, 928,645.99 and 401,017.49 is: 553,384.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,955.68 : 928,645.99 = 401,017.49 : x
  2. Step 2: Convert to fraction form
    672,955.68/928,645.99 = 401,017.49/x
  3. Step 3: Cross multiply
    672,955.68x = 928,645.99 × 401,017.49
  4. Step 4: Simplify right side
    672,955.68x = 372,403,284,008.37
  5. Step 5: Solve for x
    x = 372,403,284,008.37/672,955.68
  6. Step 6: Final answer
    x = 553,384.56

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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.