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Finding the Fourth Proportional to 384,679.80, 577,710.90 and 372,238.20

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Solution

The fourth proportional to 384,679.80, 577,710.90 and 372,238.20 is: 559,026.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,679.80 : 577,710.90 = 372,238.20 : x
  2. Step 2: Convert to fraction form
    384,679.80/577,710.90 = 372,238.20/x
  3. Step 3: Cross multiply
    384,679.80x = 577,710.90 × 372,238.20
  4. Step 4: Simplify right side
    384,679.80x = 215,046,065,536.38
  5. Step 5: Solve for x
    x = 215,046,065,536.38/384,679.80
  6. Step 6: Final answer
    x = 559,026.14

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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.