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Finding the Fourth Proportional to 666,903.42, 920,326.59 and 360,979.74

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Solution

The fourth proportional to 666,903.42, 920,326.59 and 360,979.74 is: 498,151.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,903.42 : 920,326.59 = 360,979.74 : x
  2. Step 2: Convert to fraction form
    666,903.42/920,326.59 = 360,979.74/x
  3. Step 3: Cross multiply
    666,903.42x = 920,326.59 × 360,979.74
  4. Step 4: Simplify right side
    666,903.42x = 332,219,253,173.29
  5. Step 5: Solve for x
    x = 332,219,253,173.29/666,903.42
  6. Step 6: Final answer
    x = 498,151.97

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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.