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Finding the Fourth Proportional to 386,246.80, 579,370.20 and 370,500.40

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Solution

The fourth proportional to 386,246.80, 579,370.20 and 370,500.40 is: 555,750.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,246.80 : 579,370.20 = 370,500.40 : x
  2. Step 2: Convert to fraction form
    386,246.80/579,370.20 = 370,500.40/x
  3. Step 3: Cross multiply
    386,246.80x = 579,370.20 × 370,500.40
  4. Step 4: Simplify right side
    386,246.80x = 214,656,890,848.08
  5. Step 5: Solve for x
    x = 214,656,890,848.08/386,246.80
  6. Step 6: Final answer
    x = 555,750.60

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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.