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Finding the Fourth Proportional to 527,865.48, 728,445.42 and 298,419.21

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Solution

The fourth proportional to 527,865.48, 728,445.42 and 298,419.21 is: 411,813.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,865.48 : 728,445.42 = 298,419.21 : x
  2. Step 2: Convert to fraction form
    527,865.48/728,445.42 = 298,419.21/x
  3. Step 3: Cross multiply
    527,865.48x = 728,445.42 × 298,419.21
  4. Step 4: Simplify right side
    527,865.48x = 217,382,106,764.52
  5. Step 5: Solve for x
    x = 217,382,106,764.52/527,865.48
  6. Step 6: Final answer
    x = 411,813.45

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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.