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Finding the Fourth Proportional to 384,721.20, 577,081.80 and 366,350.40

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Solution

The fourth proportional to 384,721.20, 577,081.80 and 366,350.40 is: 549,525.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,721.20 : 577,081.80 = 366,350.40 : x
  2. Step 2: Convert to fraction form
    384,721.20/577,081.80 = 366,350.40/x
  3. Step 3: Cross multiply
    384,721.20x = 577,081.80 × 366,350.40
  4. Step 4: Simplify right side
    384,721.20x = 211,414,148,262.72
  5. Step 5: Solve for x
    x = 211,414,148,262.72/384,721.20
  6. Step 6: Final answer
    x = 549,525.60

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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.