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Finding the Fourth Proportional to 542,826.40, 815,017.20 and 306,630.40

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Solution

The fourth proportional to 542,826.40, 815,017.20 and 306,630.40 is: 460,384.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,826.40 : 815,017.20 = 306,630.40 : x
  2. Step 2: Convert to fraction form
    542,826.40/815,017.20 = 306,630.40/x
  3. Step 3: Cross multiply
    542,826.40x = 815,017.20 × 306,630.40
  4. Step 4: Simplify right side
    542,826.40x = 249,909,050,042.88
  5. Step 5: Solve for x
    x = 249,909,050,042.88/542,826.40
  6. Step 6: Final answer
    x = 460,384.85

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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.