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Finding the Fourth Proportional to 478,946.64, 718,698.90 and 265,892.82

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Solution

The fourth proportional to 478,946.64, 718,698.90 and 265,892.82 is: 398,994.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,946.64 : 718,698.90 = 265,892.82 : x
  2. Step 2: Convert to fraction form
    478,946.64/718,698.90 = 265,892.82/x
  3. Step 3: Cross multiply
    478,946.64x = 718,698.90 × 265,892.82
  4. Step 4: Simplify right side
    478,946.64x = 191,096,877,251.90
  5. Step 5: Solve for x
    x = 191,096,877,251.90/478,946.64
  6. Step 6: Final answer
    x = 398,994.09

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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.