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Finding the Fourth Proportional to 615,128.12, 922,249.24 and 377,980.80

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Solution

The fourth proportional to 615,128.12, 922,249.24 and 377,980.80 is: 566,699.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,128.12 : 922,249.24 = 377,980.80 : x
  2. Step 2: Convert to fraction form
    615,128.12/922,249.24 = 377,980.80/x
  3. Step 3: Cross multiply
    615,128.12x = 922,249.24 × 377,980.80
  4. Step 4: Simplify right side
    615,128.12x = 348,592,505,534.59
  5. Step 5: Solve for x
    x = 348,592,505,534.59/615,128.12
  6. Step 6: Final answer
    x = 566,699.02

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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.