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Finding the Fourth Proportional to 710,074.96, 979,911.24 and 387,794.54

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Solution

The fourth proportional to 710,074.96, 979,911.24 and 387,794.54 is: 535,160.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,074.96 : 979,911.24 = 387,794.54 : x
  2. Step 2: Convert to fraction form
    710,074.96/979,911.24 = 387,794.54/x
  3. Step 3: Cross multiply
    710,074.96x = 979,911.24 × 387,794.54
  4. Step 4: Simplify right side
    710,074.96x = 380,004,228,556.63
  5. Step 5: Solve for x
    x = 380,004,228,556.63/710,074.96
  6. Step 6: Final answer
    x = 535,160.72

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1.5x scale

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.