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Finding the Fourth Proportional to 666,705.56, 920,046.54 and 360,775.22

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Solution

The fourth proportional to 666,705.56, 920,046.54 and 360,775.22 is: 497,865.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,705.56 : 920,046.54 = 360,775.22 : x
  2. Step 2: Convert to fraction form
    666,705.56/920,046.54 = 360,775.22/x
  3. Step 3: Cross multiply
    666,705.56x = 920,046.54 × 360,775.22
  4. Step 4: Simplify right side
    666,705.56x = 331,929,992,878.74
  5. Step 5: Solve for x
    x = 331,929,992,878.74/666,705.56
  6. Step 6: Final answer
    x = 497,865.94

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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.