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Finding the Fourth Proportional to 665,902.40, 918,948.86 and 364,096.40

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Solution

The fourth proportional to 665,902.40, 918,948.86 and 364,096.40 is: 502,454.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,902.40 : 918,948.86 = 364,096.40 : x
  2. Step 2: Convert to fraction form
    665,902.40/918,948.86 = 364,096.40/x
  3. Step 3: Cross multiply
    665,902.40x = 918,948.86 × 364,096.40
  4. Step 4: Simplify right side
    665,902.40x = 334,585,965,294.88
  5. Step 5: Solve for x
    x = 334,585,965,294.88/665,902.40
  6. Step 6: Final answer
    x = 502,454.97

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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.