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Finding the Fourth Proportional to 666,768.80, 920,143.88 and 360,845.24

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Solution

The fourth proportional to 666,768.80, 920,143.88 and 360,845.24 is: 497,968.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,768.80 : 920,143.88 = 360,845.24 : x
  2. Step 2: Convert to fraction form
    666,768.80/920,143.88 = 360,845.24/x
  3. Step 3: Cross multiply
    666,768.80x = 920,143.88 × 360,845.24
  4. Step 4: Simplify right side
    666,768.80x = 332,029,539,213.13
  5. Step 5: Solve for x
    x = 332,029,539,213.13/666,768.80
  6. Step 6: Final answer
    x = 497,968.02

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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.