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Finding the Fourth Proportional to 978,838.54, 1,350,806.41 and 549,127.90

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Solution

The fourth proportional to 978,838.54, 1,350,806.41 and 549,127.90 is: 757,801.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,838.54 : 1,350,806.41 = 549,127.90 : x
  2. Step 2: Convert to fraction form
    978,838.54/1,350,806.41 = 549,127.90/x
  3. Step 3: Cross multiply
    978,838.54x = 1,350,806.41 × 549,127.90
  4. Step 4: Simplify right side
    978,838.54x = 741,765,477,730.17
  5. Step 5: Solve for x
    x = 741,765,477,730.17/978,838.54
  6. Step 6: Final answer
    x = 757,801.67

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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.