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Finding the Fourth Proportional to 455,554.60, 683,331.90 and 123,130.60

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Solution

The fourth proportional to 455,554.60, 683,331.90 and 123,130.60 is: 184,695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,554.60 : 683,331.90 = 123,130.60 : x
  2. Step 2: Convert to fraction form
    455,554.60/683,331.90 = 123,130.60/x
  3. Step 3: Cross multiply
    455,554.60x = 683,331.90 × 123,130.60
  4. Step 4: Simplify right side
    455,554.60x = 84,139,066,846.14
  5. Step 5: Solve for x
    x = 84,139,066,846.14/455,554.60
  6. Step 6: Final answer
    x = 184,695.90

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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.