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Finding the Fourth Proportional to 478,706.91, 660,630.29 and 274,795.08

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Solution

The fourth proportional to 478,706.91, 660,630.29 and 274,795.08 is: 379,225.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,706.91 : 660,630.29 = 274,795.08 : x
  2. Step 2: Convert to fraction form
    478,706.91/660,630.29 = 274,795.08/x
  3. Step 3: Cross multiply
    478,706.91x = 660,630.29 × 274,795.08
  4. Step 4: Simplify right side
    478,706.91x = 181,537,953,668.57
  5. Step 5: Solve for x
    x = 181,537,953,668.57/478,706.91
  6. Step 6: Final answer
    x = 379,225.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.