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Finding the Fourth Proportional to 478,834.70, 718,252.05 and 401,852.30

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Solution

The fourth proportional to 478,834.70, 718,252.05 and 401,852.30 is: 602,778.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,834.70 : 718,252.05 = 401,852.30 : x
  2. Step 2: Convert to fraction form
    478,834.70/718,252.05 = 401,852.30/x
  3. Step 3: Cross multiply
    478,834.70x = 718,252.05 × 401,852.30
  4. Step 4: Simplify right side
    478,834.70x = 288,631,238,272.22
  5. Step 5: Solve for x
    x = 288,631,238,272.22/478,834.70
  6. Step 6: Final answer
    x = 602,778.45

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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.