Home / 890,904.84-1,336,357.35-259,818.72

Finding the Fourth Proportional to 890,904.84, 1,336,357.35 and 259,818.72

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Solution

The fourth proportional to 890,904.84, 1,336,357.35 and 259,818.72 is: 389,728.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,904.84 : 1,336,357.35 = 259,818.72 : x
  2. Step 2: Convert to fraction form
    890,904.84/1,336,357.35 = 259,818.72/x
  3. Step 3: Cross multiply
    890,904.84x = 1,336,357.35 × 259,818.72
  4. Step 4: Simplify right side
    890,904.84x = 347,210,656,139.59
  5. Step 5: Solve for x
    x = 347,210,656,139.59/890,904.84
  6. Step 6: Final answer
    x = 389,728.11

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.