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Finding the Fourth Proportional to 645,958.20, 969,154.63 and 286,079.15

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Solution

The fourth proportional to 645,958.20, 969,154.63 and 286,079.15 is: 429,214.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,958.20 : 969,154.63 = 286,079.15 : x
  2. Step 2: Convert to fraction form
    645,958.20/969,154.63 = 286,079.15/x
  3. Step 3: Cross multiply
    645,958.20x = 969,154.63 × 286,079.15
  4. Step 4: Simplify right side
    645,958.20x = 277,254,927,207.99
  5. Step 5: Solve for x
    x = 277,254,927,207.99/645,958.20
  6. Step 6: Final answer
    x = 429,214.97

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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.