Home / 1,287,172.92-1,931,071.52-388,560.96

Finding the Fourth Proportional to 1,287,172.92, 1,931,071.52 and 388,560.96

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Solution

The fourth proportional to 1,287,172.92, 1,931,071.52 and 388,560.96 is: 582,935.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,172.92 : 1,931,071.52 = 388,560.96 : x
  2. Step 2: Convert to fraction form
    1,287,172.92/1,931,071.52 = 388,560.96/x
  3. Step 3: Cross multiply
    1,287,172.92x = 1,931,071.52 × 388,560.96
  4. Step 4: Simplify right side
    1,287,172.92x = 750,339,003,639.86
  5. Step 5: Solve for x
    x = 750,339,003,639.86/1,287,172.92
  6. Step 6: Final answer
    x = 582,935.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.