Home / 873,629.89-1,205,606.78-491,656.67

Finding the Fourth Proportional to 873,629.89, 1,205,606.78 and 491,656.67

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Solution

The fourth proportional to 873,629.89, 1,205,606.78 and 491,656.67 is: 678,484.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,629.89 : 1,205,606.78 = 491,656.67 : x
  2. Step 2: Convert to fraction form
    873,629.89/1,205,606.78 = 491,656.67/x
  3. Step 3: Cross multiply
    873,629.89x = 1,205,606.78 × 491,656.67
  4. Step 4: Simplify right side
    873,629.89x = 592,744,615,428.21
  5. Step 5: Solve for x
    x = 592,744,615,428.21/873,629.89
  6. Step 6: Final answer
    x = 678,484.82

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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.