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Finding the Fourth Proportional to 978,445.11, 1,350,313.16 and 548,750.64

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Solution

The fourth proportional to 978,445.11, 1,350,313.16 and 548,750.64 is: 757,308.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,445.11 : 1,350,313.16 = 548,750.64 : x
  2. Step 2: Convert to fraction form
    978,445.11/1,350,313.16 = 548,750.64/x
  3. Step 3: Cross multiply
    978,445.11x = 1,350,313.16 × 548,750.64
  4. Step 4: Simplify right side
    978,445.11x = 740,985,208,006.67
  5. Step 5: Solve for x
    x = 740,985,208,006.67/978,445.11
  6. Step 6: Final answer
    x = 757,308.92

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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.