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Finding the Fourth Proportional to 478,730.70, 718,096.05 and 279,276.30

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Solution

The fourth proportional to 478,730.70, 718,096.05 and 279,276.30 is: 418,914.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,730.70 : 718,096.05 = 279,276.30 : x
  2. Step 2: Convert to fraction form
    478,730.70/718,096.05 = 279,276.30/x
  3. Step 3: Cross multiply
    478,730.70x = 718,096.05 × 279,276.30
  4. Step 4: Simplify right side
    478,730.70x = 200,547,207,888.62
  5. Step 5: Solve for x
    x = 200,547,207,888.62/478,730.70
  6. Step 6: Final answer
    x = 418,914.45

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Similar ratio
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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.