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Finding the Fourth Proportional to 386,214.80, 579,322.20 and 370,468.40

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Solution

The fourth proportional to 386,214.80, 579,322.20 and 370,468.40 is: 555,702.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,214.80 : 579,322.20 = 370,468.40 : x
  2. Step 2: Convert to fraction form
    386,214.80/579,322.20 = 370,468.40/x
  3. Step 3: Cross multiply
    386,214.80x = 579,322.20 × 370,468.40
  4. Step 4: Simplify right side
    386,214.80x = 214,620,568,518.48
  5. Step 5: Solve for x
    x = 214,620,568,518.48/386,214.80
  6. Step 6: Final answer
    x = 555,702.60

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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.