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Finding the Fourth Proportional to 380,005.60, 570,008.40 and 377,381.20

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Solution

The fourth proportional to 380,005.60, 570,008.40 and 377,381.20 is: 566,071.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,005.60 : 570,008.40 = 377,381.20 : x
  2. Step 2: Convert to fraction form
    380,005.60/570,008.40 = 377,381.20/x
  3. Step 3: Cross multiply
    380,005.60x = 570,008.40 × 377,381.20
  4. Step 4: Simplify right side
    380,005.60x = 215,110,454,002.08
  5. Step 5: Solve for x
    x = 215,110,454,002.08/380,005.60
  6. Step 6: Final answer
    x = 566,071.80

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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.