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Finding the Fourth Proportional to 542,818.40, 815,005.20 and 306,622.40

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Solution

The fourth proportional to 542,818.40, 815,005.20 and 306,622.40 is: 460,372.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,818.40 : 815,005.20 = 306,622.40 : x
  2. Step 2: Convert to fraction form
    542,818.40/815,005.20 = 306,622.40/x
  3. Step 3: Cross multiply
    542,818.40x = 815,005.20 × 306,622.40
  4. Step 4: Simplify right side
    542,818.40x = 249,898,850,436.48
  5. Step 5: Solve for x
    x = 249,898,850,436.48/542,818.40
  6. Step 6: Final answer
    x = 460,372.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.