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Finding the Fourth Proportional to 418,331.50, 578,817.48 and 364,728.16

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Solution

The fourth proportional to 418,331.50, 578,817.48 and 364,728.16 is: 504,650.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,331.50 : 578,817.48 = 364,728.16 : x
  2. Step 2: Convert to fraction form
    418,331.50/578,817.48 = 364,728.16/x
  3. Step 3: Cross multiply
    418,331.50x = 578,817.48 × 364,728.16
  4. Step 4: Simplify right side
    418,331.50x = 211,111,034,456.24
  5. Step 5: Solve for x
    x = 211,111,034,456.24/418,331.50
  6. Step 6: Final answer
    x = 504,650.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.