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Finding the Fourth Proportional to 978,940.08, 1,350,941.04 and 571,323.48

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Solution

The fourth proportional to 978,940.08, 1,350,941.04 and 571,323.48 is: 788,428.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,940.08 : 1,350,941.04 = 571,323.48 : x
  2. Step 2: Convert to fraction form
    978,940.08/1,350,941.04 = 571,323.48/x
  3. Step 3: Cross multiply
    978,940.08x = 1,350,941.04 × 571,323.48
  4. Step 4: Simplify right side
    978,940.08x = 771,824,336,247.62
  5. Step 5: Solve for x
    x = 771,824,336,247.62/978,940.08
  6. Step 6: Final answer
    x = 788,428.58

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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.