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Finding the Fourth Proportional to 576,615.60, 864,145.80 and 386,535.60

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Solution

The fourth proportional to 576,615.60, 864,145.80 and 386,535.60 is: 579,282.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,615.60 : 864,145.80 = 386,535.60 : x
  2. Step 2: Convert to fraction form
    576,615.60/864,145.80 = 386,535.60/x
  3. Step 3: Cross multiply
    576,615.60x = 864,145.80 × 386,535.60
  4. Step 4: Simplify right side
    576,615.60x = 334,023,115,290.48
  5. Step 5: Solve for x
    x = 334,023,115,290.48/576,615.60
  6. Step 6: Final answer
    x = 579,282.13

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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.