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Finding the Fourth Proportional to 661,977.92, 913,538.88 and 360,172.16

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Solution

The fourth proportional to 661,977.92, 913,538.88 and 360,172.16 is: 497,042.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,977.92 : 913,538.88 = 360,172.16 : x
  2. Step 2: Convert to fraction form
    661,977.92/913,538.88 = 360,172.16/x
  3. Step 3: Cross multiply
    661,977.92x = 913,538.88 × 360,172.16
  4. Step 4: Simplify right side
    661,977.92x = 329,031,271,653.58
  5. Step 5: Solve for x
    x = 329,031,271,653.58/661,977.92
  6. Step 6: Final answer
    x = 497,042.67

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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.