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Finding the Fourth Proportional to 527,939.52, 728,365.61 and 346,749.68

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Solution

The fourth proportional to 527,939.52, 728,365.61 and 346,749.68 is: 478,389.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,939.52 : 728,365.61 = 346,749.68 : x
  2. Step 2: Convert to fraction form
    527,939.52/728,365.61 = 346,749.68/x
  3. Step 3: Cross multiply
    527,939.52x = 728,365.61 × 346,749.68
  4. Step 4: Simplify right side
    527,939.52x = 252,560,536,814.93
  5. Step 5: Solve for x
    x = 252,560,536,814.93/527,939.52
  6. Step 6: Final answer
    x = 478,389.15

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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.