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Finding the Fourth Proportional to 978,833.54, 1,351,369.42 and 616,567.93

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Solution

The fourth proportional to 978,833.54, 1,351,369.42 and 616,567.93 is: 851,228.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,833.54 : 1,351,369.42 = 616,567.93 : x
  2. Step 2: Convert to fraction form
    978,833.54/1,351,369.42 = 616,567.93/x
  3. Step 3: Cross multiply
    978,833.54x = 1,351,369.42 × 616,567.93
  4. Step 4: Simplify right side
    978,833.54x = 833,211,041,034.86
  5. Step 5: Solve for x
    x = 833,211,041,034.86/978,833.54
  6. Step 6: Final answer
    x = 851,228.53

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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.